I use your Synatax Getting Error in BMM layer
ToDate("Core"."Fact - CRM - Service Request"."# of Open SRs" ,1)
Error Like this..
[nQSError: 27002] Near <1>: Syntax error [nQSError: 26012] .
Level Means Level in the Time Dime.
I was wrong.
Make sure your dimension is Time dimension(check dimension general prop to check this), that would allow you to choose level in expression builder.
Looks like you are not using level and using just column.
Pls mark if helps