Custom container

Hi all,

I have custom container on the screen. when i enter some data into the alv grid and press enter, it should validate some dates in it. I have used

if ok_code = 'ENTER'

.............

endif.

This works only when i click on the screen outside the custom container, i.e if the control is outside the container.

My requirement is the validation should take place even if the cusor is in the CC space and ENTER is pressed.