Result of the FM is not passing

Hello Everyone,

I have developed a custom FM and I have developed a custom screen inside the FM.

But can anyone tell how to get the value of the push-button into the FM and based on it one container value needs to be updated.

If I click on the push-button, then no value is getting stored in sy-ucomm.

Also please let me know if there is a standard business object for Sales deal change or create.

Thank you for your help in advance.

Regards,

Vinod