Is that possible that we use ClosingPeriod in RS based DMR?

[will.sl]

How to use ClosingPeriod in a report to get the last member? The report is based on DMR. I tried to use it in report but failed.

Thanks 

[rockytopmark]

I am pretty sure that many Dimensional Functions such as LastPeriod, ParallelPeriod and the like are NOT compatible with DMR, only true OLAP sources.

Check with Cognos Support for verification