When answer = 0, need to remove 0. How?

[musicmaker]

I need to remove the zero when the answer comes back ZERO. I need the field to be blank. Nothing in it. Thanks in advance for your help.

 

[Karl K]

Is it a calculated field?
Try iif(Sum([Field4) = 0, Null, Sum([field4))

Make sure there is no default of 0 on the form. Also check the table to make sure there is no default of zero on the table.