Help needed to animate a spring compression between two objects

Can anybody help me with this. The normal Rhino transformation of 1D scaling or Stretch works, but, when animation is enabled, Bongo scaling does not appear to recognize the 1D.
Thanks for any input…

Just use the numerical inputs on the timeline in scale mode.

Thanks Andy! Got this to work only with the spring. But how do I get this compression to work when the spring is between two objects, one of which causes the compression?

Just move the pivot to one end of the spring.