Hello, How to verify a quest step before applying a script ?

my script is:

Scriptname motRkundTriggerSCRT extends ObjectReference
{sets a quest stage when enter trigger}


quest property CheckedQuest auto
{ quest toCheck}

int property Checkedstage auto
{ stage to Check}

quest property myQuest auto
{ quest to call SetStage on}

int property stage auto
{ stage to set}


Event OnTriggerEnter(ObjectReference akActionRef)
if(akActionRef == Game.GetPlayer()) ; This condition ensures that only the player will trigger this code
if (CheckedQuest.Stage(Checkedstage))
Debug.MessageBox("Yippee!")
myQuest.setStage(stage)
endif
endif
EndEvent