How do I make objects in a family act differently from a differing instance variable?

Hello,

I am trying to make a project where you have spaceships with a set range of movement.

All the ships are part of a family called "units", and inherit an instance variable for range from it.

In the code, i compare distance from its starting position.

As long as it stays within the parameters, it moves freely to wherever you clicked.

Here is a screenshot.

The issue that keeps occurring is that when I tweaked the code, either all the ships stayed in the smallest range, or only one of each object type under the family stays in its own range.

I suspect that the issue is related to the family that all the ships are under "Units".

any suggestions on how to fix this?

Thank you all so much

Hello, I found the problem. I went back to the code where I used the "for each" loop, and found that I simply had inconsistent instance variables. two ships had 0 set for range, and the other three ships worked as they should have. I just had to set the variables and it worked as intended.