Changing the "Radial gradient fill"

I am trying to change the gradient color and it works fine when doing on the LinearGradientFill, but I receive the following error when changing the RadialGradientFill:

Plugins currently cannot set radial gradient fills.

I am assuming that it is not supported through the API yet?

Correct, radial gradients are not yet supported in the plugins API. You can’t create or modify them, and the properties you see when you read an existing radial gradient are undocumented – so they may change at any point in the future without warning.

Sure, thank you for the answer.