Parameters cannot be found after elements created

I’m using StructuralFraming.BraceByCurve to create diagonal braces and like to set the Start/End Join Cutback parameters. but It looks like Dynamo cannot find the parameters right after the instance creation. I’m thinking if I need to regenerate the model before retrieve the parameters. I know that the Start/End Join Cutback parameters will not exist if the beam is not connected to the other elements, but in my case the brace is connected and the 2 parameters are shown from the properties window.

BraceCreationSample.rvt (1.1 MB)
BraceCreator_Exp.dyn (64.8 KB)

try using a transaction.end node

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