Opposite trajectory

Hi there, I’m attempting a sort of pull back to go forward system and would like to create a visual trajectory for the user. This sounds complex but here’s a screenshot to show what it would look like if it worked.

I feel like I’m missing something really obvious here but I’ve got the pull back system working fine but just not sure how to reverse the values to create an opposite trajectory.

Any help is appreciated

There’s an expression to compute the angle between two positions.
Write ‘angle’ in the field, and you’ll find it.

Thanks, I’ve found a solution working around this expression.