Here's the problem. One of the fields we are using to build our dynamic distribution list has the potential to have multiple values. It's an extension attribute that can have either a single value, like "123", or multiple values, like "765,123,626". I'm trying to get my dynamic distribution list filter to be able to pick up any user with "123". I know how to do this with regex in PowerShell using the -match or -contains operators. However, the filters for dynamic distribution lists are more restrictive. I have tried to use:

((CustomAttribute2 -like '$variableName*') -or (CustomAttribute2 -like '*$variableName'))

However, I get error messages basically saying that I can't use that filter. I've also tried:

(CustomAttribute2 -like '*$variableName*')

This produced an error message that wildcards cannot be used at the start of the expression.

I'm sure there's a way to do what I need to do, but I'm at a loss. Thank you for your time and thank you in advance for the help.