How to set the fields invisible when its contents are empty?

Hi all,

I’m changing the subscreen from standard screen for mobile device interface, i.e. function group LMOB.

Originally before the changes, the screen 2212 in LMOB displays the fields that contain values and hides the fields that are empty.

But after I’ve changed to use customized subscreen 1212 in function group XLRF, all the fields are displayed regardless if they contain values or not.

What should I do in order to have the same display as in the original one in my subscreen 1212?

Thanks in advance.