Fcode

Hi,

I have a tcode for module pool program it has 7 screen i used to only one module for back in all screens but my problem is when i press back buttom in 2 nd screen it is comming first screen it is correct but after that when i press enter in the first screen the back module is executed , when i execute the program in debugging mode sy-ucomm is back but i pressed enter in this screen what to do how to change sy-ucomm .

I will reward Definitely for good answer.