diff --git a/README.md b/README.md
index e053966..5987f8b 100644
--- a/README.md
+++ b/README.md
@@ -10,9 +10,8 @@ Data source from : https://github.com/pomber/covid19
 
 ## Features : 
 
-- Maths functions : Exp, pow, Logistic
 - sync X axis at a value
-- reset 
+- reset (broken, need reload page too)
 - set a limit for y axis
 - select first and last day
 - select data source (confirmed, deaths, recovered)
diff --git a/brain.md b/brain.md
index 51f8173..5f00766 100644
--- a/brain.md
+++ b/brain.md
@@ -3,7 +3,14 @@
 
 ## First production : 
 
-User Local Presets (N)
+OK  load data source
+OK git clean
+vuejs prod
+hosting
+
+
+Save user config to local
+reset mode 
 
 Charts modes:
 - Country day decal
diff --git a/doc.md b/doc.md
index f7122a5..51cd3b1 100644
--- a/doc.md
+++ b/doc.md
@@ -3,8 +3,6 @@
 
 # Changelog 
 
-v0.04 Fix reset
-v0.03 maths functions
 v0.02 sync x axis
 v0.01 repack, data auto loading
 
diff --git a/src/App.vue b/src/App.vue
index ec9b7d7..446abcb 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -106,26 +106,9 @@
             ymax: 0,
             syncSince: 0,
             resetConfig: false,
-            math: {
-                exp: {
-                    display: false,
-                    factor: 6.5,
-                    dayPrev: 26
-                },
-                pow: {
-                    display: false,
-                    factor: 3,
-                    dayPrev: 5
-                },
-                logi: {
-                    display: false,
-                    factor:0.15,
-                    dayPrev: 42
-                },
-            },
         },
         countriesConfig: {
-            selected: [{name: "France"}, {name: "Italy"},{name:"Spain"},{name:"United Kingdom"}],
+            selected: [{name: "France"}, {name: "Italy"}],
             basePalette: "tolRainbowColor"
         },
     }
@@ -137,13 +120,13 @@
         props: {
             source: String,
         },
-        data () { return {
+        data: () => ({
             drawer: true,
             title: 'Cov Charts',
             allData: {},
             chartWidth: 500,
-            chartConfig: Object.assign({},defaultUserConfig.chartConfig),
-            countriesConfig:Object.assign({}, defaultUserConfig.countriesConfig),
+            chartConfig: defaultUserConfig.chartConfig,
+            countriesConfig: defaultUserConfig.countriesConfig,
             configLists: {
                 scaleList: ['log', 'linear'],
                 typesList: ['confirmed', 'deaths', 'recovered'],
@@ -154,7 +137,7 @@
                 //all: Object.keys(AllData).sort(),
             },
             debug: false,
-        }},
+        }),
         watch: {
             drawer() {
                 console.log('dd', this.drawer)
@@ -189,108 +172,26 @@
                     uc = JSON.parse(uc)
                     this.countriesConfig = uc.countriesConfig
                     this.chartConfig = uc.chartConfig
+                    this.ccc("loadConfig storage")
                 } else {
-                    this.countriesConfig = Object.assign({},defaultUserConfig.countriesConfig)
-                    this.chartConfig = Object.assign({},defaultUserConfig.chartConfig)
+                    this.countriesConfig = defaultUserConfig.countriesConfig
+                    this.chartConfig = defaultUserConfig.chartConfig
+                    this.ccc("loadConfig default")
                 }
             },
             saveConfig() {
+                this.ccc("saveConfig")
                 let userConfig = {countriesConfig: this.countriesConfig, chartConfig: this.chartConfig}
                 localStorage.setItem('userConfig', JSON.stringify(userConfig))
             },
             resetConfig() {
                 localStorage.setItem('userConfig', 'null')
+                this.ccc("resetConfig")
                 this.loadConfig()
             },
             ccc(a, b) {
-                if (this.debug) console.log(a, b?b:'')
+                if (this.debug) console.log(a, b)
             },
-
-            addMathFunctions(cdata, ymax) {
-                let cc = this.chartConfig.math
-                // Pow
-                if (cc.pow.display) {
-                    cdata.push(this.calcFunction(cdata,
-                        'pow3',
-                        '#ffc500',
-                        i => limit(Math.pow(i - parseInt(cc.pow.dayPrev), parseFloat(cc.pow.factor)), 1, ymax)
-                    ))
-                }
-
-                // Exp
-                if (cc.exp.display) {
-                    cdata.push(this.calcFunction(cdata,
-                        'exp',
-                        '#fd1e00',
-                        i => limit(Math.exp((i + parseInt(cc.exp.dayPrev)) / parseFloat(cc.exp.factor)), 1, ymax)
-                    ))
-                }
-
-
-                if (cc.logi.display) {
-                    // Logistic function
-                    let L = ymax
-                    let k = parseFloat(cc.logi.factor)
-                    let xo = parseInt(cc.logi.dayPrev)
-                    cdata.push(this.calcFunction(cdata,
-                        'logistic',
-                        'rgb(253,130,0)',
-                        //i => limit(L / (1 + Math.exp(Math.E, -k*(i - xo))), 1, 60000)
-                        i => limit(L / (1 + Math.exp(-k * (i - xo))), 0, ymax)
-                    ))
-                }
-
-                return cdata
-
-            },
-            calcFunction(cdata, name, color, callback) {
-                return {
-                    country: name,
-                    color: color,
-                    isMaths: true,
-                    list: cdata[0].list.map((day, id) => {
-                        return {
-                            confirmed: callback(id),
-                            date: day.date
-                        }
-                    })
-                }
-
-            },
-            calculateLog(cdata, ymax) {
-
-                console.log(' calculateLog',)
-                let max = ymax
-                let dayDecal = 2
-
-                let pointsCount = cdata[0].list.length
-                let e = Math.log(max)
-                let step = e / pointsCount
-
-                step , dayDecal;
-                let getY = i => {
-                    i = i === 0 ? 0.5 : i
-                    let value = Math.exp((i + dayDecal) * step)
-                    //let value = Math.pow((i), 3)
-
-                    return value < max ? value : undefined
-                }
-                let pointList = cdata[0].list.map((d, i) => {
-                    return {
-                        confirmed: getY(i),
-                        date: d.date
-                    }
-                })
-                let log = {
-                    country: "log",
-                    color: '#FFCC00',
-                    list: pointList
-                }
-                cdata.push(log)
-
-                return cdata
-            },
-
         },
         computed: {
             syncSinceInt() {
@@ -304,7 +205,6 @@
 
                 let formatedData = []
                 const addSomeDays = false
-                let ymax = 0
 
                 this.countriesConfig.selected.map((country) => {
 
@@ -346,19 +246,14 @@
                         }
                     }
 
-                    // Get ymax
-
-                    filtered.map(d => {
-                        ymax = d[this.chartConfig.typeSelected] > ymax ? d[this.chartConfig.typeSelected] : ymax
-                    })
+                    // // Get ymax
+                    // filtered.map(d => {
+                    //     ymax = d[this.dataSelected] > ymax ? d[this.dataSelected] : ymax
+                    // })
 
                     country.list = filtered
                     formatedData.push(country)
                 })
-
-
-                formatedData = this.addMathFunctions(formatedData, ymax)
-
                 return formatedData
             }
         }
@@ -372,23 +267,9 @@
         font-size: 12px;
     }
 
-    input, select, .v-input, .v-label {
-        font-size: 13px;
+    input, select, .v-input {
+        font-size: 12px;
     }
 
-    .v-list--dense .v-list-item {
-        min-height: 20px;
-    }
-
-    .v-list--dense .v-list-item .v-list-item__content {
-        padding: 2px 0;
-    }
-
-    .v-list-item__action{
-        margin: 8px 0;
-    }
-    .v-text-field.v-text-field--solo .v-input__control {
-        min-height: 20px;
-    }
 
 </style>
diff --git a/src/components/ChartConfig.vue b/src/components/ChartConfig.vue
index ba8f534..45922e3 100644
--- a/src/components/ChartConfig.vue
+++ b/src/components/ChartConfig.vue
@@ -1,7 +1,7 @@
 <template>
     <div>
 
-        <v-list dense>
+        <v-list dense >
 
             <v-list-item>
                 <v-list-item-action>Scale</v-list-item-action>
@@ -17,6 +17,7 @@
             </v-list-item>
 
 
+
             <v-list-item>
                 <v-list-item-action>Type</v-list-item-action>
                 <v-list-item-content>
@@ -56,7 +57,7 @@
             </v-list-item>
 
             <v-list-item>
-                <v-list-item-action>Sync X</v-list-item-action>
+                <v-list-item-action>Sync X </v-list-item-action>
                 <v-list-item-content>
                     <v-text-field
                             class="numField"
@@ -72,7 +73,7 @@
 
 
             <v-list-item>
-                <v-list-item-action>Limit Y</v-list-item-action>
+                <v-list-item-action>Limit Y </v-list-item-action>
                 <v-list-item-content>
                     <v-text-field
                             class="numField"
@@ -86,105 +87,6 @@
             </v-list-item>
 
 
-            <v-list-item>
-                <v-list-item-action>
-                  <b>Maths Functions</b>
-                </v-list-item-action>
-            </v-list-item>
-
-            <v-list-item>
-
-                <v-list-item-action>
-                    <v-switch
-                            label=" Exp"
-                            v-model="configs.math.exp.display"
-                            color="blue-grey darken-1"
-                    ></v-switch>
-                </v-list-item-action>
-
-                <v-list-item-content v-if="configs.math.exp.display">
-                    F:
-                    <v-text-field
-                            class="numFieldsm"
-                            v-model="configs.math.exp.factor"
-                            label="Factor"
-                            solo
-                            hide-details
-                            single-line
-                    />
-                    D:
-                    <v-text-field
-                            class="numFieldsm"
-                            v-model="configs.math.exp.dayPrev"
-                            label="Days"
-                            solo
-                            hide-details
-                            single-line
-                    />
-                </v-list-item-content>
-            </v-list-item>
-
-            <v-list-item>
-
-                <v-list-item-action>
-                    <v-switch
-                            label=" Pow"
-                            v-model="configs.math.pow.display"
-                            color="blue-grey darken-1"
-                    ></v-switch>
-                </v-list-item-action>
-
-                <v-list-item-content v-if="configs.math.pow.display">
-                    F:
-                    <v-text-field
-                            class="numFieldsm"
-                            v-model="configs.math.pow.factor"
-                            solo
-                            hide-details
-                            single-line
-                    />
-                    D:
-                    <v-text-field
-                            class="numFieldsm"
-                            v-model="configs.math.pow.dayPrev"
-                            solo
-                            hide-details
-                            single-line
-                    />
-                </v-list-item-content>
-            </v-list-item>
-
-
-            <v-list-item>
-
-                <v-list-item-action>
-                    <v-switch
-                            label=" Logi"
-                            v-model="configs.math.logi.display"
-                            color="blue-grey darken-1"
-                    ></v-switch>
-                </v-list-item-action>
-
-                <v-list-item-content v-if="configs.math.logi.display">
-                    F:
-                    <v-text-field
-                            class="numFieldsm"
-                            v-model="configs.math.logi.factor"
-                            solo
-                            hide-details
-                            single-line
-                    />
-                    D:
-                    <v-text-field
-                            class="numFieldsm"
-                            v-model="configs.math.logi.dayPrev"
-                            solo
-                            hide-details
-                            single-line
-                    />
-                </v-list-item-content>
-            </v-list-item>
-
             <v-list-item>
                 <v-list-item-action></v-list-item-action>
                 <v-list-item-content>
@@ -194,8 +96,6 @@
                     </v-btn>
                 </v-list-item-content>
             </v-list-item>
-
-
         </v-list>
     </div>
 </template>
@@ -209,11 +109,12 @@
         props: ['configs', 'configLists'],
         components: {Counter},
         data() {
-            return {}
+            return {
+            }
         },
-        watch: {
-            'configs.syncSince': function (value) {
-                if (!(value > 0)) {
+        watch:{
+            'configs.syncSince': function(value){
+                if ( ! (value > 0 ) ){
                     this.configs.syncSince = 0
                 }
             }
@@ -223,7 +124,7 @@
                 this.configs.resetConfig = true
             }
         },
-        computed: {}
+        computed: { }
     }
 </script>
 
@@ -238,9 +139,4 @@
         max-width: 50%;
     }
 
-    .numFieldsm {
-        max-width: 50px;
-    }
-
-
 </style>
\ No newline at end of file
diff --git a/src/components/MultiBarChartSingle.vue b/src/components/MultiBarChartSingle.vue
index 8998803..5c29cc9 100644
--- a/src/components/MultiBarChartSingle.vue
+++ b/src/components/MultiBarChartSingle.vue
@@ -18,7 +18,7 @@
             </div>
 
             <div v-for="(cinfo,id) in countriesData" :key="'ns'+id">
-                <div class="chartBlock"  v-if="!cinfo.isMaths">
+                <div class="chartBlock">
                     <BarChartSingle
                             :dataType="dtype"
                             :country="cinfo.name"
diff --git a/src/components/html/Counter.vue b/src/components/html/Counter.vue
index 1ab18ee..c73830d 100644
--- a/src/components/html/Counter.vue
+++ b/src/components/html/Counter.vue
@@ -1,7 +1,7 @@
 <template>
     <div :class="'counter '+ classname">
         <button @click="click(-1)" class="bleft">-</button>
-        <span>{{input}}</span>
+        <span>{{value}}</span>
         <button @click="click(1)" class="bright">+</button>
     </div>
 </template>
@@ -17,16 +17,18 @@
             classname: {type: String, default: 'themeGreen'},
         },
         data() {
-            return {}
+            return {
+                value: this.input,
+            }
         },
         methods: {
             click(dirfactor) {
-                let input = this.input + (dirfactor * this.inc)
-                if (input > this.max) input = this.max
-                if (input < this.min) input = this.min
-                this.$emit('input', input)
+                this.value = this.value + (dirfactor * this.inc)
+                if (this.value > this.max) this.value = this.max
+                if (this.value < this.min) this.value = this.min
+                this.$emit('input', this.value)
             }
-        },
+        }
     }
 </script>
 
@@ -42,18 +44,16 @@
         padding: 0;
         width: 15px;
         line-height: 15px;
-        /*/margin: 0 px 3 px 0 px 3 px;*/
+    /*/margin: 0 px 3 px 0 px 3 px;*/
     }
 
     .bleft, .bright {
         border: 0px solid red;
         border-radius: 5px;
     }
-
     .bleft {
         margin-right: 3px;
     }
-
     .bright {
         margin-left: 3px;
     }
@@ -61,17 +61,14 @@
     .themeGreen.counter {
         border: 1px solid #2c3e50;
         background: #d3e3e0;
-        color: white;
+        color:white;
     }
-
     .themeGreen.counter button {
         background: #d3e3e0;
     }
-
     .themeGreen .bleft {
         border-right: 1px solid #2c3e50;
     }
-
     .themeGreen .bright {
         border-left: 1px solid #2c3e50;
     }
@@ -79,19 +76,16 @@
     .themeGrey.counter {
         border: 0px solid #8ecaf9;
         background: inherit;
-        color: white;
+        color:white;
     }
-
     .themeGrey.counter button {
         background: #767676;
         width: 18px;
         line-height: 18px;
     }
-
     .themeGrey .bleft {
         border-right: 0px solid #8ecaf9;
     }
-
     .themeGrey .bright {
         border-left: 0px solid #8ecaf9;
     }