It's quite asimple statement, not sure why it's not working;
Set Text [movedir] to '{EXP:IIF({TXT:movedir}='right','left','right')}'
The movedir field can only be left or right...I was hoping this simple statement would invert it; so if it's 'right', it becomes left and if it's anything else (given it can only otherwise be 'left') it becomes 'right'.
What am I doing wrong?