It looks OK to me.
Another note about FSX:
When we make scenery changes, we still need to exit the sim and restart it to ensure the changes are visible. This hasn't changed from FS9... in fact it is worse in that the sim leads you to believe the changes can be done from within the Scenery Library. Not true.
That may be why you didn't see the changes at first, but now they work! You probably exited the sim in frustration, and when you restarted it, the changes were there.
Thanks again for all the information.
Your final remark i had noticed too; first i thought that one didn't have to restart FSX, but later on i found out that the situation had changed when i came back later....I think that this is an important item to know for other designers as well; at least for the starters...