Filtering companies

It seems to work to filter companies by fields when searching for certain values. Is there also a way to filter for empty values?

I tried “” or null, but they don’t work.

Update: It works through API though, similar to filtering contacts. Although documentation says there is no filtering for companies via API :wink:

If you like to try - example:


it reads like this: where[0][col]=field_ID&where[0][expr]=isNull

It looks for companies, where the field “field_ID” is null.
Unfortunately it doesn’t work in the frontend, if I try “field_ID: isNull”.