How to Refresh the input fields ???

We have used BAPI to display output depending upon the input given in the Input fields.

If the BAPI Output does not contain any valid entries (that is when the user gives some invalid input) we are popping up a Dialog Window sayin "No valid entries found!".

The Problem is after clicking 'OK' of the Dialog Window,the entries in the input fileds are not getting Erased i.e. the input fields are NOT getting REFRESHED.

Plz Help...

Thanks in Advance!!!

Regards,

Harshada