Yml files with keys

[Nckyi]

I need a skript that would keep randomly generated keys (that can be obtained on random generator websites) and that would be kept inside of YML files. When player would use the command
/redeem i.e /redeem ADWAD098ODA982;
It would remove the used key from the correct yml and give the player the reward from said key.

I can't find a way to actually make skript read the yml to find the said key and then delete it.
The reason it needs to be deleted is so it can only be used by one player.

 

[Deleted member 5254]

command /generatecode:
  trigger:
    if player is op:
      set {_code} to a random 10 char string from `a-zA-Z0-9`
      add "%{_code}%" to yaml list "ActiveCodes" from file "plugins/YourFolder/YourFile.yml"
      send "Code Generated: %{_code}%" to player

command /redeem [<string>]:
  trigger:
    if arg-1 is set:
      set {_list::} to yaml list "ActiveCodes" from file "plugins/YourFolder/YourFile.yml"
      loop {_list::*}:
        if arg-1 is "%loop-value%":
          remove loop-value from yaml list "ActiveCodes" from file "plugins/YourFolder/YourFile.yml"
          send "Code Successfully redeemed" to player
          stop
      send "Invalid Code" to player
    else:
      send "You did not provide a code to redeem" to player

I'm not sure if something like this is what you need, but this should get what you need done, it doesn't use a random generator website however as you can randomly generate a string with skript itself