I have some user parameters which I set in "fx":
Now I need to place standard square tube ("Place from Concent Center") with a length of Tube0Length
mm. How can I do this? Inventor doesn't accept the parameter:
After playing around a bit with Content Center parts in Inventor, I managed to reproduce your problem and find kind of a workaround. It is not as smooth as just typing your parameter name in the Content Center window, but maybe it helps you.
This is of course a bit clumsy, but it gets as close to your problem as I can come up with right now.