Constructing object from class

I am trying to change the wheel class for every wheel as I want to change the shape radius of the wheels. But this crashes, however object returned is the one of the class.
Can anyone tell me why the project crashes when I do this or how I can change the shape radius of the vehicle wheel using blueprint scripts ?

What is the crash log saying? What is the Front Wheel Jeep class a child class of the Wheels type?

Front Wheel Jeep is a child class of Vehicle Wheel.

There are two possible reasons. First, try checking the boolean “size to fit”. If that does not work the problem is most likely not when you make it, but when you use it. You are trying to access objects that does not exist. For example, if you try to access the array location 1. Check where you access the array as well.