Try this and You need add the ID (example: MP:=268).
[macro]1000 {Stop Killer if low MP} MP:=ID Misc.ItemCountEx(!MP!)<=100 [Else] Killer.Stop() Exit() {Else} Misc.ItemCountEx(!MP!)>=101 Killer.Start() Exit()[/macro]
[macro]1000 {Stop Killer if low MP} MP:=ID Misc.ItemCountEx(!MP!)<=100 [Else] Killer.Stop() Exit() {Else} Misc.ItemCountEx(!MP!)>=101 Killer.Start() Exit()[/macro]