How to dispatch length values into trees using other values as the index

[Jam]

This seems quite simple but I just can’t work it out.

I’m trying to use the values in the left list to create trees to then dispatch the length values on the right list into the trees using the left hand values.

EG:

{0}
866.809209
1997.845336
347.406893
2004.151517

{1}
668.221266
1226.399145
1234.949624
907.802951

{2}
1703.079553
1227.412102
2075.097523
1267.799727

All these values are variable so the tree numbers and value lengths will change every time.

[inno]

next time please attach your gh file, so people can test if it works also outside photoshop

[Jam]

Perfect thanks!