How can we hide a empty row from master pages of adobe forms

Hii All...

I have a requirment likei hav a table in adobe form there are 4 rows. I want that if in 2 and 3 row if there is not data it should be hide.

right now i am getting blank line here i want to remove it also and 4 row come at place of second row.

Could someone please help me ?

Thanks