Advanced Prompt Selection!!!

[k2]

Hi All,

I am currently working in COGNOS version 8.4. I have one Search & Select Prompt and one Text box prompt, both are mandatory prompts. The user can either type the value in the text box prompt or user can select the value using search&select prompt. since it is a mandatory prompt, it requires input for both the prompts.

I tried with optional prompt but the user can able to click Finish button with out selecting any of the prompt.

Could any one help me out, how to make this prompt mandatory and the FINISH button should get enabled if the user feeds the value for any one of the prompts! All your suggestions are welcome. Thanks.