how plz tell me plz

If you want Uke and Tori back to back, type /set engagerotation 180.

me facing his back and im facing forward
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me looking at hhis back i mean god

/set engageplayerpos 0,1,0,0,-1,0 should do it.

k now how do i get to his neck

There's an easier way to do that.

Simply set engage distance to minus.

Like this:

/set ed -200
or
/set engagedistance -200

That should also do the trick.

And what do you mean by "get to his neck"?

i mean like a neck snap
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and not working

Oh, silly me... I missunderstood you.
Sorry about that.

Anyway, I'm not quite sure what do you want. You want your tori to be near uke's head? Or do you just want to know how to decap uke?

dude i got fracture on and no disember so neck snap and plus me near ukes head
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like ukes not noticing and i come in and and snap his neck
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*and*

Fracture? That's weird...

/set fracture 0
/set dismemberment 1
/set dt 100