poly mousover macro

Hello there.
I'm trying to make a macro, the polys my target or mousover target (if it present) without a modifier, AND poly my focus target with shift:

#showtooltip Polymorph
/stopcasting
/cast [nomod,@mouseover,nodead,harm][] Polymorph
/cast [mod:shift,@focus] Polymorph

Well, the first part works, I can poly my direct target and my mousover target, but the second part (with mod:shift) doesn't work. Any ideas?

#showtooltip Polymorph
/stopcasting
/cast [mod:shift,@focus] Polymorph
/cast [nomod,@mouseover,nodead,harm] Polymorph
/cast [nomod,@target,nodead,harm] Polymorph

This should work, but make sure you don't have shift-4 bound to any key.

Guys thank u both a lot for replies, very helpful! Took the macro by Blkunxpd, works perfectly.