Analytics Software

HI,
I have a requirement. We need have some users in Repository based on regions.
The requirement is that when a EAST region user logs in he should see only EAST region data.

We have fulfilled this requirement with the help of USER/GROUP Permissions setting in the RPD but the additional requirement is as follows we have a dashboard prompt on Region & branch and the branch is constraint on the regions.

Now when a EAST region user logs in he has only the value EAST under the Region Dashboard prompt, but the issue is it doe sent have the default value as EAST in the Region prompt although it applies the filter of east region in the report based on the user login, but still under the region prompt it shows (All Choices) by default & if i uncheck the (All Choices) check box it shows the blank value as default. My requirement is that based on the user login the default value of the prompt should be 'EAST' so that the Constrain applied on the branch prompt based on region also works & shows only Branches for a Particular Region.

Regards,