Return position of pivot point

[Fireandsmoke 5]

I have an animated model, Model A. I want to set its pivot point, and then return the position of that point, using that position to drive some transform parameters of another object, Model B... so for example, as Model A rises vertically I want the other Model B to scale wider.    
How would I most easily achieve this ?

Thanks for the advice  

 

Edited October 12, 2020 by Fireandsmoke

[Rence 6]

Not sure if this is what you are looking for. But by just using Transform SOPs you can get the centroid of one object and then use that to drive the scale of another object.

I'm sure there are better ways to do this, but if it's something simple, this might work

scale_by_object_position.hiplc

[Fireandsmoke 5]

Thank you Rence, the centroid function looks like what I need.  Cheers