[Closed] MaxScript – Help with slidertime?

Need help with simple MaxScript problem that I am trying to learn, I tried some example from documentation but didn’t find a solution for slidertime and height controler.

I have a Box001, box is animated at keyframes 0 to 5 with height controller. I want to be able to move keyframes and move slider to first keyframe with same command.

What command would be to move slider to first keyframe of a box, regardless if keyframes of a box are moved?

for

$.height.controller.keys[1]

got
#Bezier Float key(1 @ 5f)

After I get value of first keyframe how to define variable for first
keyframe?

Tried:

foo = $.height.controller.keys[1] 
slidertime = getkeytime foo [1]

Returns an Error:
– No ““getKeyTime”” function for #Bezier Float key(1 @ 5f)