How to use a blob field in a formula.

[snowcold]

Hello all,
I am using CR 8.0 and I am attempting to create a formula where I check to see if a datafield is null or not. When I insert this datafield, I get the error:

Blob field or memo field cannot be used in formula.


This particular field is set to varchar2(4000).
Since this is already a varchar, what do I convert it to in order to use it?

thanks

 

[snowcold]

Sorry, I searched the FAQ after....I really feel dumb. I really do.

I found this FAQ in #4
faq149-276