How to visible and Invisible text object in Crystal report

Question

Hi All,

 

How to visible and Invisible text object in Crystal report 

 

Ex- 

 

There is two text object

 

SGST : 9%

IGST  : 9%

 

If there is value then SGST and IGST text object is visible.

 

 And

 

 SGST : 

IGST : 

 

If there is null value then SGST and IGST text object is Invisible.

 

Please give me solution thanx in advance