MainUI check for Null value to set visibility

Add-ons UIs
, ,
1

I try to set a oh-list-item to be visible depending whether a certain item contains a value or is NULL. It was easy to check for specific values but I fail to check for NULL. Could someone please advise how a expression to check for an item NULL value would look like?

Dominik

2

Pretty much the same as checking for specific values only using "NULL". Show what you’ve tried.

3

Also, keep in mind that all values returned by the items object in the widget expressions are strings. So, you are not actually comparing to a value of NULL but a string "NULL".

4

This was the relevant hint. Thanks