Create a Pages based on a Fixed Version filter

How can I create a Pages with Fixed Versions with the following specs

[Measures].[Issue fix versions] = “(no version)” OR
[Fix Version].CurrentHierarchyMember.Name MATCHES ‘^Q._.*’

But I get an error where it expects a string and gets a numeric

Only the epics have fixed versions, but the report should show the epics and then still expand out (not filter out the issues, etc)

I would also like to order the results according to a custom ordering
Q1_22, Q2_22, Q3_22, Q4_22, Q1_23, No Versions…

Yea, I know - if only the pattern was YY_Q