simple interpolate and change position not working

Hi
Im trying to interpolate my 2 background right to left and have it jump back to its original position to loop. I can easily do it with the move behaviour but Im trying to save some memory by using interpolate, which I can then turn movable off also with right?
I have when self.position.x is less than -240
then.. change self.position.x 720
and below I have..
When self.position.x is more than 700
then
Interpolate self.position.x to -240
should this be working?
Im trying to interpolate my 2 background right to left and have it jump back to its original position to loop. I can easily do it with the move behaviour but Im trying to save some memory by using interpolate, which I can then turn movable off also with right?
I have when self.position.x is less than -240
then.. change self.position.x 720
and below I have..
When self.position.x is more than 700
then
Interpolate self.position.x to -240
should this be working?
Comments
it looped three times then stopped working after that
now Ive changed the behaviours back to..
Move.. at speed 225
I have when self.position.x is less than -240
then.. change self.position.x 720
And now it dont move at all... 0.9.3 is killing me!