Table control field change indicator

Hello..

Let's say we have the following code in the PAI for a table control having filed f1.

FIELD f1 MODULE mod1 ON REQUEST.

Is there any way to trigger this module mod1 even though it's value is not changed? Is there any change indicator that we can set programatically?

Actually my requirement is to upload some records into the table control from a text file. After that the usual validations should take place on the table control. In this case the table control won't trigger the modules ON REQUEST. Is there any way to force this?

Thanks very much.