I have a problem, all the elements (lighting devices) are placed on the floor and not on the wall, do you have any suggestions
My suggestion is:
Show us what you did (use the camera button in the right upper corner to make a “photo” of your work)
Since you’re new here (and welcome to the community btw.) You’'l have to wait till the computer says YES before you can post images. 
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Thank you in advance,
I have the elements that are placed “Place on vertical face”.
I used the video script from the link below
¨Hello @ardimifta here is an example with face based and on linked models/doors, probably not the same as the video as i havent seen it yet…can easy be modified so it work on non link as well…play around with it 
thank you for your answer, can you make the video a little slower, because I can’t see some steps correctly.
Best you show how far you are instead of i give you a finish solution, nobody will learn anything that way…
.but here is a fast example, and if you go stuck, then show your graph so we can try help…good luck
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The “a.name” code block takes the list of Level elements and retrieves the name (string). You need that where your watch node is.
Youre feeding level elements into a string input.
Yeah try as @Robert_Younger and @GavinCrump suggest
and probably a/2 + 100 if you are in milimeter and 30 in other codeblock on right probably 300 instead of 30 depends on unit
