Uhrwerk thank for the reply.
Yes you were pointing the right issue. Vec_temp and vec_temp2 point to different things.
with vec_temp being the target point and vec_temp2 being a normalized speed for the difference between current place and target point.
Vec_temp2 ,work to get the object to the target, however vec_temp became changed so no longer held the target point.

Anyways thank for the reply.