Dynamo player and sequence in which it runs

[mzjensen]

Hi @Christhian,

You’ve created what’s called a race condition by have two separate branches that are independent from one another. After the Select Objects node, the flow then branches to the Object.Geometry node and the ObjectExtensions.SetParameterValueByName. There is nothing telling the computer that it should execute one or the other first, so it’s essentially a “race” between the two. There is a high likelihood that this will lead to inconsistent results. What you need to do is add a simple gate so that you force the elevation parameter to be set before you get the geometry. This post should help.

Passthrough, how can i understand that?

It is simply just creating a list and then getting the first item in the list. So it could be rewritten as: List.FirstItem(passthrough,waitfor); Or you could even simplify it further and just do a code block with: [a,b][0]; It acts as a gate because Dynamo has to “collect” all of the items in the list before passing the contents on to the next node.