I have a skript which is not working

[Omex]

Hey,I have a skript which has been working for the past 3 months and suddenly it just stopped working,can somebody help me with it and tell me what to do?

Thanks

on right click with paper:
  if player's tool is paper named "&0[Devil]":
                    #rest
    execute console command "lp user %player% parent set devil"

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