resize chart automatically (PHP Report Maker 11)

Hello,
I am working with PHP Report Maker 11.
It is possible resize a chart automatically?
I don’t know how to put the width and height in % instead of px.
This is the sentence that is generated:
// Chart1
$ this-> Chart1 = new crChart ($ this, ‘Chart1’, ‘Chart1’, ‘ds_up’, ‘type’, 1004, ‘’, 0, ‘COUNT’, 800, 800);

Thanks,
Rosa

Have you tried in Reports feature in PHPMaker v2020?