I search a function for moving object

Hi :)

I search a fonction for move an object from :)

Px1,Py1,Pz1 => Px2,Py2,Pz2

have an idea ?

Regards

move object px2-px1, py2-py1, pz2-pz1

Or

function movetowards(sourceentity,targetentity,speed#,how_close#)

pointentity sourceentity,targetentity
moveentity sourceentity,0,0,speed

if entitydistance(sourceentity,targetentity)<how_close# then return true else return false

end function

Thanks !!! very much !