How can I change the parametric model of a bridge - piers?

[durasovartyom]

Good days!

How can I change the parametric model of a bridge - piers?

Specifically, how do I change the parametric model of a bridge piers in Inventor so that I can change the distance between the right piers and the left piers separately? Relative to the bridge axis.

[durasovartyom]

I am attaching a model from the standard palette.
Can anyone advise how to adjust this parametric model in Inventor so that it is possible to change the distance to the left and right of the bridge axis?