Small problem expression daubt?

[Paulo Beck]

Hi

Small problem....

What is wrong with this expression? The element that should appear in X == 1 does not appear

[Rokas]

Hi. Welcome.
Because last segment location on x axis is not ==1. RailClone starts to place segments from 0 location. But it does not necessarily mean that last segments location=1. And in fact it is not if trusting Default input.
You can change expression to >0.8  and see that this is the case.

To place on the very end You should use End input:

[Paulo Beck]

thank you!