so been reading and cant find this macro. is it possible to set up a target of target macro that would cast if it wasnt on a certain target. so it would be a button on your healers bars that is the same as your dps mash button. it would be some thing like if the targets not targeting your tank it would cast some thing on what ever the target was. would be some thing like

/cast [target=focustargettarget,help] Riptide
/cast [target=focustarget,help] Riptide

but some where have it to only cast if its not targeting a certain player. like where the "help" is, have (notplayersname).