As you can see in the screenshot the random movement of the vertices in each rectangle is identical, although I want each one to be different.

I suspect this is because my geometry tree has 4 branches, but my random number list only has one.
I am relatively new to grasshopper, and even after watching several tutorials of data trees i can’t seem to find the solution.

This generates two random numbers for each of four vertices per rectangle, ‘xy’ angle (in radians) and ‘d’ (offset distance) controlled by the ‘Range’ slider. So each corner is effectively jiggled about randomly to create a new closed trapezoidal 4-point polyline. Two ‘Seed’ sliders in blue groups.