Not sure whether I understood you properly.
I don't think we have a ready made solution, so trying a a work around here:
Since you have 100+ values to be entered, I believe the user is not doing it in a Adhoc manner.
Do he have a list of those 100+ values in a excel or something like that,
Just try this solution:
In the excel where you have 100+ filter values, add ; after each value. Ex: 123; 456; 789;
Then enter all the value in the prompt.
I believe webi will consider each as a different records.
Not sure about the solution as I have not personally tested it.
BR
Prabhith