calling standard program

Dear Experts,

I have writen a Z program which converts the format of the output file, i need to execute the standard program rfebck00 after execution is completed i need the final output values back in my Z program for further process..

I tried with the submit and return ...but it is not working ,

I'm getting the output but after I pressed the back button its going to my program but user is not willing to press back button Is there any other way to do the above requirement...

thanks in advance

Hema