How to add effects in Draw line. Please Help..!

Hi…!

We can add only transparency effect to shapes but how to add other effects like Radial Gradient and Linear Gradient. Like is this URL HTML5 Canvas - Create Gradients
I think so it’s no possible using GUI of Gdevelop. How to add these effects using JavaScript or edit the drawing Plugin or by any mean possible.

Please help me out just give a little example rest of, I can do

Thanks,