Boom! You got it.
Well, I have no idea that such an instance definition existed. I guess it allows to control many components at the same time.
Also, I have no idea why the "sketchupattributemanager" plugin attaches the attributes to the component definition and not the component itself. But I found another plugin by Rick Wislon that attaches and retrieve at the "right" place...
Is there a plugin out there that manages component attributes, creates reports, ectc?
Thanks a lot for your help. I'll start reading about instance definition to make sure I understand what this is.
Also, thanks for your advise on debugging and syntax. I'll do just that.