quest door

[BulawOw]

Ok lets say i make quest and while i talk with npc he gives me storagevalue 1 etc. and if i make guest my storage id = lets say 6, now its the question how can i make quest door that players gonna have acces only after thay make the quest.

There is my lib for storagevalues

Storage = {
   HiddenMonster = {
       QuestLine = 90,
   },
}

 

[BulawOw]

any idea how can i do that ?