While making field invisible at runtime in FPM_FORM_UIBB that row is coming as blank

Hi All,

In one of the requirement we are making one of the fields indivisible at runtime in the method -  GET_DATA  of the class - CL_HRESS_PER_DETAIL.

But row in which the filed is made invisible is coming as blank .

Is there any way to change the row number of the fields at run time .

Thanks

Amol