Pushing several objects along a spline

Hello!

I want to push several “cart” objects along the spline.
Push mechanic is working on 1 object.

I have added my objects into the array like this

and connected it to my push along spline blueprint like so

as well as in my can push function (edited as i realized i had an error here)

And with the arrays current behavior is this →
cart issue

As you can see one cart works well ( orientation is wrong but i dont care rn )
and if i push a bigger cart it only works on smaller cart

I have also found this post Move multiple actors along spline - #6 by Everynone

but I don’t quite understand how to correctly implement the suggestions

Thank you!