Hi,
does exist a template for an expandable GOP?

I do this but the controls are not hidden when the switch is set off (they remain visible out of the abstraction box):

I looked for the pd-tutorial page and tried these

canvas_dialog1.pd

ive got the range numbers wrong whatever

@FFW You need to hide the gop and then show it to force redraw, send 0 then 1 to the third argument. You also will want to send [dirty 0( to the canvas or pd will think the canvas has been edited and prompt you asking if you want to save changes.
gop.pd

@FFW You might have more luck using the coords message rather than donecanvasdialog.... as coords doesn't need the useful hacks that are mentioned above.
I have added a size message to an old gop demo patch and it seems to work reliably with a sub-patch.
I haven't checked for an abstraction
gop_switch_coords.pd
David.