Conditional content in transactional message template

[ElisabettaPi]

Hi all, 

I need help about a conditional content in transactional message template.

I need to show different text when a field is empty or full.

I tried different condition (IS EMPTY, IS NULL, == 0) but noone worked.

If I write:

didn't work. If I put a space between "" and in the field there is a space, it works. 

How can I specified the condition "the field is empty"??

Thanks

[Heku_ · Accepted solution]

Hello @ElisabettaPi. As this is javascript, not SQL, you should try with rtEvent.ctx.@attribute == undefined.

Hope this helps!