How to set default Dynamic value to Tree Prompt

[tgs728]

Hi All,
OLAP reports, Cognos 10.2
I have time dimension and and a custom hierarchy for last 6 months.

I need to default pass the last 6 months members to Tree prompt so that when the report runs it should show the last 6 months defaulty.
My tree prompt is in report page.

Thanks,
TGS

[tgs728]

is there any solution ?

[bdbits]

Do you only care about what the report selects, or is this a visual thing for the user? The former can be handled within the report queries. Visually showing it on the prompt will be more difficult, I think.