Aim Instance To A Locator

[clapperboy]

Im trying to point my instance object when they are created to a locator.
Ive created a rotationPP atrributes which will drive the rotation of the instance when they are created.
Now im looking for a command or script that will return the rotation coordinate of point A to aim toward point B given their world space position?
angle doesnt seem to return what im looking for.
ive tried vector2rot script...

[codebox]float $Zloc[] =xform -q -a -ws -t Z\_loc;
vector $Zlocv= <> ;
vector $dir = (particleShape1.position - $Zlocv);
vector $normal = <>;
float $rot[] = vector2rot $dir $normal;
float $rotX = deg_to_rad( deg_to_rad( $rot[0] ) );
float $rotY = deg_to_rad( deg_to_rad( $rot[1] ) );
float $rotZ = deg_to_rad( deg_to_rad( $rot[2] ) );
particleShape1.rotVPP= <>;
[/codebox]

Any advice?

Thanks

[clapperboy]

Well, i've figured how.
ive created two attributes.
an aimPosPP, and an aimAxisPP.

[codebox]particleShape1.aimAxisPP=<>;

float $Zloc[] =xform -q -a -ws -t Z\_loc;
vector $Zlocv= <> ;
particleShape1.aimPosPP=$Zlocv;
[/codebox]

Z_loc is the locator that I am aiming at.

ive then use the aimAxisPP as aimAxis and aimPosPP as aimPosition in the instancer rotation option