Hello all of bro! I just use the Dynamo. Now, I have trouble with this node. I can’t see this node group the Length same together. Please, I need your help! 
What is your end goal?
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Can you duplicate all the wall by new Type Name?
Ex: Wall (length 1700mm) set name Wall 1,
2 Wall (with length 2000mm) set name Wall 2, Wall (length 18000mm) set name Wall 3…
Thank you very much!!!
Why are using Structural Framing 
? If you want to duplicate walls.
I am using the Framing, but the nice man give me example the Wall. This is resion why I said that I want to duplicate the wall. My idead is choosing all the framing and duplicate them with new name! <3
Thank you @Kulkul
Try using @Nico_Stegeman method. Once you group the structural elements you can get the counts and feed in names.
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Thank you Kulkul so much! I’m trying and will find the way. Thank you so much again!
Are you trying to duplicate one family type?
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Your list.groupbykey node from wich package is that?
Use levels in your familytypDuplicate node
here is another example where the nodes bool.mask, groupbykey and sortbykey are used. (this was a dynamograph for room numbering)
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Thank you to 2 bro!!! Now, I can do it! Thank you very much! I love you! <3