Hiding null records in crystal reports

Hello Everyone,

This is my situation like i have five columns to show in report. Which forms 10 rows. I use method like drag column in details and it make field heading in header section automatically.

Now the problem is there may be null value in fields so they occupy space. I had tried isnull(filed1) but it hide all if it have single null record.

I just want to hide where it is null and show where it is not null.

col1 col2 col3 col4 col5
a     a     a      a      a
b     b     b     b      b
null  null  null  null  null
null  null  null  null  null
null  null  null  null  null
null  null  null  null  null
null  null  null  null  null

null  null  null  null  null 
null  null  null  null  null

z      z      z      z       z

Desired Output
col1 col2 col3 col4 col5
a     a     a     a     a
b     b     b     b     b
z     z     z     z     z

Sorry for bad design but Please help me.