Chart Script example of modifying series entries in the legend

This example uses a scripted dataset to get the names of each series for the legend.  A hidden table is placed on the report that calls the dataset.  The oncreate for the row sets persistent global variables with the names of the series.

 var st1 = this.getRowData().getColumnValue("series1");
var st2 = this.getRowData().getColumnValue("series2");
var st3 = this.getRowData().getColumnValue("series3");

reportContext.setPersistentGlobalVariable("seriestitle1", st1);
reportContext.setPersistentGlobalVariable("seriestitle2", st2);
reportContext.setPersistentGlobalVariable("seriestitle3", st3);

The chart series titles are set to

series1-title, series2-title, and series3-title in the third tab of the chart wizard.

Then in the chart script beforeDrawLegenItem the series titles are changed based on the value retrieved from the scripted dataset.

function beforeDrawLegendItem(lerh, bounds, icsc)
{

 if( lerh.getLabel().getCaption().getValue().compareToIgnoreCase("series1-title") == 0 ){
     var myst3 = icsc.getExternalContext().getScriptable().getPersistentGlobalVariable("seriestitle1");
  lerh.getLabel().getCaption().setValue(myst3);
 }
 if( lerh.getLabel().getCaption().getValue().compareToIgnoreCase("series2-title") == 0 ){
     var myst3 = icsc.getExternalContext().getScriptable().getPersistentGlobalVariable("seriestitle2");
  lerh.getLabel().getCaption().setValue(myst3);
 }
 if( lerh.getLabel().getCaption().getValue().compareToIgnoreCase("series3-title") == 0 ){
     var myst3 = icsc.getExternalContext().getScriptable().getPersistentGlobalVariable("seriestitle3");
  lerh.getLabel().getCaption().setValue(myst3);
 }

}