increase the no of hits to 10000 by default

Hi Experts,

We have a requirement to increase the No of hits to 10000 after selecting the F4 from the variable screen in the web report by DEFAULT.

I know to change the value at the no of hits manually, but i am really concerned to make it to 10000 as standard. for set of reports or all reports

Is there any table where i can change the parameter and make it as 'Default'

Thanks in Advance

Suren