Look at http://forum.getkirby.com/t/negated-isempty-and-isnotempty-seem-to-work-differently/1632/3 for the hint.
I hope it helps you.
Good luck!
Look at http://forum.getkirby.com/t/negated-isempty-and-isnotempty-seem-to-work-differently/1632/3 for the hint.
I hope it helps you.
Good luck!