api - Birt Chart: How do I access an aggregation values from a bound dataSet via script -

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could me following:

i have chart element in .rptdesign file. uses dataset has 3 column bindings. 2 columns (x,y) came dataset , used make plot. have column binding aggregation (count) on x. trying count how many points in dataset. far good....

now depending on how many points dataset, need dynamically adjust properties of chart, through beforegeneration() event handler.

question: how access aggregation values within beforegeneration() event handler shown below:

function beforegeneration( chart, icsc ) { importpackage( packages.org.eclipse.birt.chart.model.data.impl ); count = ?????  //get_value_from_aggregatoin }

thanks!!


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