Hi!
I've made a custom test-version of Advanced selection, please give it a try. This version should create a window on startup that tells you type and content of a specific variable, that seems to be faulty for you. Please tell me, whtat the prompt tells you, thx.
If you use standard label colors it should be "string" and "B53838".
Are you using another script and/or 3rd party extension or plugin? And are your label colors standard colors or customized?
October 2021