I am trying to set a Theme property of a Grid Container through code, specifically, custom_constants > hseparation.
I know how to set the property index of a Grid Container (For example, $GridContainer.columns =3) through code.
But I don't know to set the Theme Properties as given in the documentation:
int vseparation [default: 4] The vertical separation of children nodes.
int hseparation [default: 4] The horizontal separation of children nodes.
I want to change the default from 4 to some other value, say 5.
Thanks for your help.