[Scripting Question] Custom ability that has chance of suppressing targeting moves

[Black Temple Gaurdian]

#ARACHNOPHOBIA
      if target.hasWorkingAbility(:ARACHNOPHOBIA) && !thismove.pbIsStatus?(thismove.type)
        if @battle.pbRandom(10)==0
          PBDebug.log("ARACHNOPHOBIA triggered #{pbThis} was unable to move")
          return false
        end
      end
#END ARACHNOPHOBIA

As you can see, it's supposed to result in damaging moves targeting the ability-wielder to have a 1 in 10 chance of failing. I tried putting it in def pbTryUseMove, but target isn't defined then (or something).

 

[Telemetius]

I'd say paste it somewhere inside the method def Pbsuccesscheck.

 

[Black Temple Gaurdian]

Thanks!