[Closed] Get final position from current position by slider value

Hi everybody
can anyone help me with this

 we have a final position for ex [0,50,100] and we have a teapot at the [0,-20,40] position, now i like to get the final position from the current position by slider value    
 here it is my try

try destroyDialog test catch()
      rollout test ""
      (
     	 slider sld range:[0,100,0]
     	 
     	 on sld changed val do
     	 (
     		final_pose=[0,50,100]
     		temppos=[final_pose.x/100,final_pose.y/100,final_pose.z/100]
     		$teapot001.pos =temppos*val 
     	)
     
      )
      createDialog test
      -------	

  And the problem is, when I divide the final_pose by 100 it become less then current $teapot001.pos in some axis.value so the teapot first moves to [0,0,0] and then goes tothe Final position by slider value.
 if it was a single axis i could subtract the final and current pos and say if grater then..... but now it is 3 point value how should i do this 
  
  any help is so appreciated
  Thanks in advance