Selecting a Physical Part or Interface, using the left mouse button to activate menu brings up the option of creating a Property. A useful object, in that in car hold nominal and range for a float characteristic, say output kilowatts of a generator. However, it never attaches. It will not link. It will not do anything as far as I can determine, except in a Class (pure software modeling on a motor is useless). Friends, let’s see if we can fix this. Either declare in the documentation that it only attaches to a Class OR, take it off the menu choice OR better BOTH. This feature to no where burned up a good two weeks of effort that led to zero results.