f4 help issue

Hi all,

I have requirement in providing f4 help for a field.

I want similiar to search help where i can input few values and get the required values based on the input.

Input few values means inputing int he pop up window when we press f4 values.

I can use search help in here because the value for which i am providing search help has duplicate records so i cannot elimnate right.

Please let me how to write code for this.

I WANT SOMETHING SIMILAR TO WHAT WE GET WHEN WE USE DIALOG WITH VALUE RESTRICTION OPTION WHILE CREATING SEARCH HELP.

Thanks