Can anyone out there make a macro as to where my slave will heal my focus' mouseover.

Example

Dual boxing, Master is my slaves focus. Master mouses over self(Master), hit macro and slave heals master, Master mouses over slave, slave heals slave.

Bottom line can a macro like this work.

/cast [target=targetmouseovertarget,help] flash Heal

I pretty sure that isnt' a real targeting condition, but you get the point