Also pretty sure you can't. If you can take a video, by all means show us. One of my biggest peeves with mo macros is how some skills get lost when weaving/(mis-judging my gcd). If they queued properly I wouldn't encounter these issues.
Mouse over macros are amazing though, so long as you keep them as one liners. If you go for macros that heal another target if your <mo> doesn't exist or is out of range then it's really clunky.