Regular spline distribution?

[cecofuli]

Hi,

sorry for that, but after many times, I can't to do like in this image



Always on my spine I've a random position. I want to distribute my tree with a regular distance.
I follow the image sample, but Iv'e always a irregular position. there are some tricks ?

[cecofuli]

Ok! Found the problem. I've model a masterplan, so usual distance is 200-500 mt. If I insert 3 or 4 like a U or V value it's too low.
If I insert a 200 or 300, all works fine