Dynamic select-options

Hi,

I have tried to write a generic - dynamic program that is proper for all tables to upload data into them.

The user enters the table name,selects a file and then executes the program, data is uploaded into tables. It is something very useful for Z tables, just one program to upload data for all tables.

What i need now is that, i want to use the entered table's key fields to select data and will show this data when clicked on a function key, but i dont know how to create a select-options depending on the entered table name's fields into parameter. It is ok and easy to get the all data of entered table but what if the user wants to enter some criteria???

Is there any idea on this?

Thanks.

deniz.