Creating multivalue promt in Query Studio

[aamuktha]

I am working with ReportNet1.1.I have created a mandatory date prompt and an optional text prompt in the Query Subject in the Frame work Manager .
I want to create a multiple value prompt in the Report level(Query Studio).
But when I am selecting the particular column and trying to create a filter in Query Studio ,I am unable to do so .
It is not showing any error message .
The other prompts that I had created in the query level is working fine in the report.

[mrcool]

y dnt u create multiple value prompt in framework itself using prompt many...

[MDXpressor]

...

y dnt u create multiple value prompt in framework itself using prompt many...

...is authoring the report in Report Studio another option?  Is there something at play that restricts your option to Query Studio?