So I did my google searching and I tried all the mouse over heal macros but they're not working. Am I doing something wrong?

I'm an arcanist and I used
/ac "Psychik" <mo>

and the way I use it is put the button on my hot bar, press it, then move my mouse cursor over my party member. Nothing happens and I get an error in the system messages. What am I doing wrong here?

Additionally, the pet commands /ac "Sic" <t> never seem to work either.
If anyone has links/tips for this that actually work please help!