Authors CurseForge

I have two questions that relate to ACEGUI Icon widgets

Question 1:
Consider:

a,b,c = GetMacroInfo(id)

The b in the above line used to return a path to an icon like "INTERFACE\\ICONS\\INV_MISC_QUESTIONMARK"

b now returns an ID. Is there a way I can set the AceGui Icon control to accept the id? If i pass it where i used to pass the string I get a green square.

Question 2:
Is there a way of calling the ingame Icon browser when i click on an Icon widget?

Apologies - found my mistake my code was prefixing "Interface\\Icons\\" to the ID.

Any luck on number 2?