Thank you so much, the XOR operation explains the strange results.
[Darby Edelen] “Also I’m not sure that all of your expressions are necessary for your stated goal. If you want the rate of change of the null’s position have you tried:
thisComp.layer(“End of Shot”).transform.position.speed;
The result is in pixels/second…”
No I did not know about this but I will defiantly use it instead! 🙂
Thanks again for the help, I really appreciate it!