Create a Java action to do that for you.
The Java code is really simple:
return Core.retrieveId(getContext(), Core.createMendixIdentifier(guidParm));
retrieve from database
using a hardcoded string
[id = ‘1234567’]
or using a variable
[id = $Variable]
It's really strange that this is not working (or no longer). You can always add another attribute and use the comm.commons getGUID action to set it.
I suggest upvoting this idea
and else, there's always java
Yes, I stumbled on this as well. I ended up saving the GUID on the object and using that in my selections.