Issues searching for a value in a list variable

[DannyDaMannyy]

Trying to get a system so players can choose which team they want to be on. When they choose that team, I want it to add them to a list variable. But I cant find a value in the list variable! If I broadcast it, I get the contents of the variable accurately. It's a series of player names. But HOW DO I DETECT IF A SPECIFIC PLAYER NAME exists in the list variable?!

Code ive been using to test:

command /lol:
    trigger:     
        loop {teamred::*}:
            if {teamred::%player%} is event-player's name:
                send "You are a member of Team RED!" to player
            else:
                set {_gui} to a new chest inventory with 1 row named "&cTeam &aSelector"
                set slot 1 of {_gui} to red wool named "&cRED TEAM" with lore "Click this to choose team red!"
                open {_gui} to player
                send "You have not chosen a team yet!" to player

 

[DannyDaMannyy]

figured it out! Had to use this phrase instead:

set {player::*} to player's name
if {teamred::*} does not contain {player::*}:
    send "&cIt worked!!" to all players