XF 2.0 Notices for blank custom user field

[wrkalot]

I have a custom user field criteria set up called Vessel Details. When I migrated from vB 4.x that field was placed in the About field. I want to create a notice that asks users, where that custom field is blank, to go to their account and add their details. I set up the notice using the attached but the notice doesn't display. So I am assuming this isn't possible OR I have done something wrong when setting up the notice?

 

[wrkalot]

So, I guess it's safe to assume that I can't do this.

 

[Paul B]

It won't match a blank entry so you can't do that.

 

[affLIFT]

Being able to check for blank/empty custom user fields would be a nice addition to notices