Insert multiple number between a list

Revit
1

hi friend, I want to insert 0 number between (at certain index number) a list (only be create one list), but 3 list be created
what we must do?!

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2

Hi, maybe a clue

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edit

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Sincerely
christian.stan

3

thanx. but we have two condition ,

  1. list (3,7,10) is variable, maybe we have 4, maybe 7, …,
  2. zero(0) must set at this index number(3,7,10)
4

Hi, you can create the necessary accommodations with what is put here, I think

cordially
christian.stan