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# Example: Update Chart Series

This example shows how to access a `Chart` instance's `seriesCollection` after the `Chart` has rendered.

series:

fill color:

border color:

border weight:

### Update Series of a `Chart` Instance After It has Rendered.

You can update a series after the `Chart` has rendered through the `getSeries` method. This method returns a reference to a series instance based on either the instance's `seriesCollection` index or the key value associated with the value data of the series. This example uses the value key of each series to update the fill color, border color and border weight of its markers.

#### CSS

    #mychart {
        margin:10px 10px 10px 10px;
        width:90%;
        max-width: 800px;
        height:400px;
    }

#### HTML

    <div id="mychart"></div>

#### JavaScript

    YUI().use('charts', function (Y)
    {
        var myDataValues = [
            {category:"Q1", expenses:137000, revenue:532200},
            {category:"Q2", expenses:211000, revenue:689100},
            {category:"Q3", expenses:151000, revenue:521500},
            {category:"Q4", expenses:163000, revenue:892650}
        ];

        var mychart = new Y.Chart({type:"bar", dataProvider:myDataValues, render:"#mychart"});

        //Click handler
        Y.on("click", function(e) {
            var seriesName = Y.one("#seriesSelector").get("value"),
                fillColor = Y.Escape.html(Y.one("#fillColor").get("value")),
                borderColor = Y.Escape.html(Y.one("#borderColor").get("value")),
                borderWeight = parseFloat(Y.one("#borderWeight").get("value")),
                series,
                marker = {fill:{}, border:{}};
            if(seriesName)
            {
                series = mychart.getSeries(seriesName);
                if(fillColor)
                {
                    marker.fill.color = fillColor;
                }
                if(borderColor)
                {
                    marker.border.color = borderColor;
                }
                if(!isNaN(borderWeight))
                {
                    marker.border.weight = borderWeight;
                }
                series.set("styles", {marker:marker});
            }
       }, "#updateSeries");
    });