Can you please post the original URL, the result you expect and the error message?
I'm wondering why you need the characters before form.
The reason for including that is because some urls are lms-form, /form2 , so i want to include all possible url's in there.
I don't think the Contains function can do fuzzy match.
If you use "(\/|\-)form", it will try to find the exact same string, instead of something like '%form%'.
If you want to combine [Web Group] and School then you might want to do [Web Group]+ "School" in the THEN clause of your logic.
IF CONTAINS ([Converted Page],"(\/|\-)form") THEN [Web Group] +"School"