Using Google Script to

[Patrick Dufresne]

I have the following Script:

 var chart4 = sheet.newChart()

     .setChartType(Charts.ChartType.LINE)

     .addRange(sheet.getRange("A1:G100"))

     .setOption('title','Page and Session RPM by Site')

     .setOption('aggregationTarget', 'category')

     .setOption('legend',{position:'bottom'})

     .setPosition(1, 1, 0, 0)

     .build();

But by default, it doesn't check the "Use row 1 as headers" option, how can I set this using google script?