Ah, very interesting, thanks brewsky!

Dan, Thanks for verifying. It is surprising that NotImplementedError wasn't raised, if that is the case here.

Not able to set enumerated "choice" type attributes via the API. For example, the IFC 2x3 CompositionType for IfcBuilding provides the values "complex", "element", or "partial". It can be set manually with the UI, but not the API:

selection = Sketchup.active_model.selection
definition = selection.first.definition
definition.add_classification("IFC 2x3", "IfcBuilding")

path = ["IFC 2x3", "IfcBuilding", "CompositionType", "IfcElementCompositionEnum"]
success = definition.set_classification_value(path, "element")

Error; #<RuntimeError; Unexpected attribute type>
<main>;in `set_classification_value'
<main>;in `<main>'
SketchUp;1;in `eval'

Am I doing something wrong, or is this kind of value setting not yet available in the API?

Bearskin,

Have you tried configuring your sizing formulas in the children to reference dimensions of the parent?

Reference: http://sketchucation.com/forums/viewtopic.php?f=289&t=35214

matarazzodesign,

Could you provide the detailed steps needed to resolve this problem?

Dan, I tried to implement your extension script, but around line 25:

def @@plugin.path()
   @path
end

The @path variable seems to be undefined. Do you recall where that should be set? (I'm probably missing something?!)

Do you know of any similar Installers for the Mac platform?

Agenor, changing the length on a DC can be tricky. See this discussion:
https://groups.google.com/forum/#!topic/sketchupruby/630uerkDhJI/discussion