APP: How-To Check Empty Image in a BLOB Field

What This Article Is About

This article describes how-to see if an image exists in a blob field using Anveo Script. Typical scenario is an if-block in your PDF print function.

Example Code

if string.len(Rec:GETVALUE_STRING('Signature'))==0 then ...

For information: The following code will not work as the image is stored as a long text internally:

if not Rec:GETVALUE('Signature') then