mob/var
    UP=0
    UPMod=1

obj/Unlock_Potential/verb/Unlock_Potential()
    set category="Skills"
    var/mob/M=input("Who?","") as null|mob in view(1)
    if(M) switch(input(M,"[usr] wants to unlock your hidden powers. Do you want to do this?", "",text) in list("No","Yes"))
        if("Yes")
            if(!M.UP) <---Says there is an error here
                usr<<"You use Unlock Potential on [M]."
                var/boost=100000*M.BPMod*M.UPMod*M.StatRank
                if(boost>M.RecordBP*5) boost=M.RecordBP*5
                M.RecordBP+=boost
                M.RecordBP+=500*M.UPMod
                M.Pow+=(500*M.PowMod)
                M.MaxKi+=200*M.KiMod
                M.kimanip+=10
                M.flightskill+=(20*M.flightmod)
                M.haszanzo=1
                M.zanzoskill+=(20*M.zanzomod)
                M.MaxBPpcnt+=(50*M.KiRegen)
                M.GravMastered+=50*M.GravMod
                M.DeclineAge+=10
                M.UP=1 <--- says there is an error here 


            else usr<<"[M]'s potential is already unlocked."
            return
        if("No") usr<<"[M] declined your offer."