macro to sleep linked monster??

[yzfr6]

how can i set up a macro to sleep a linked monster while i am still targeting the main monster. that way you wouldnt have to switch target...disengage...then cast sleep.

[InuTrunks]

/ma "Sleep" <st>

[Somnar]

Here's how mine goes:

/recast Sleep
/ma Sleep <stnpc>
/p Putting <lastst> to sleep! Don't attack it!

[Frumply]

<stpc> for player chars only
<stnpc> for npc's (mobs, etc) only
<st> for everything