Dang, I can't do it. I think the OP has to mark it solved. 

Thank you Doug! You're the best!   The final code that worked was this:  queueTopicID=6390aa670008106db9777276d7d2d0a1&queueTopicID=639ae26e00026841880ad5b0ed91aeff&queueTopicID=6414884e000be9c4e086e8785eb04002&queueTopicID_Mod=in   I placed it here in the Optional Filter of a Watch Record trigger ...

I have a follow up question on this topic. In my case I want to use the Optional Filter to filter in issues whose queue topic ID is one of several. In a report it would look like this:   The textmode for this filter separates the queueTopicID's with a tab.   queueTopicID=6390aa670008106db9777276d7d...