Attribute participation system

[turbid gazelle]

So I'm back again I figured out the home grail that is zonesplus but I'm having a slight issue. I want the game to only teleport the players that have the attribute "Playing" true to the game. Here's my current code for reference.
So how would I grab every player that has a specific attribute?

[coral wolf]

use a table

table.insert(list_of_players_with_attribute, player_with_attribute) repeat etc