Perfect

or if folder.book != null then (note the pling!!)

Null is essentially blank or " "

Ninox is sometimes a bit funny in places

so if Folder.Book = Null won't work try an alternative like if folder.book = " "

You can also test other conditions ie if x is less than 0 etc. or less than or equal to zero

if  x < 0 etc 

if x <= 0 etc 

You can use "void" which does nothing!

full blurb from master Ninox Ref

you email support  - support@ninox.com

and ask them to give you access to the Webinar EN2022 system

there are manay user test Apps on there etc the main ref is called 0001_Ninox Reference (note it is a master so must not be altered - but you can download a copy)

I don't know if it is for subscription members only as I have always been a paying memeber as I operate multi user and my business production systems are on Ninox cloud.

Thanks for the top tip Mel, I now have a download of 0001_Ninox Reference. But don't think having this will stop my daft questions!

[BTW sorry for the rude TLA above, support have deleted the very long spam posting it refered to.]

User system here isn't great, is it! No wonder for all the spam posts...

Davie - Now I know I am getting old - err what is FFS?

Oh - I think I have worked it out !