How would I set the name of a table to a players UserId?

Ok I know this is a simple thing to do but I don't get the idea of how I can do it

like I've tried this

 BigAssTable = {}

game.Players.PlayerAdded:Connect(function(player)

BigAssTable[player.UserId] = {}
    
    print(BigAssTable.player.UserId)
    
end)

But I get

I want to be able to get tables by players userid

14:06:14.766 - Workspace.Thing:7: attempt to index field 'player' (a nil value)

so for example if a Players UserId was 666

then it would be BigAssTable {

666 = {}

}

and I can use it to do BigAssTable[666]

I'm not sure if you're trying to change the actual table name or trying to add the Player UserId to the table.

If you want to add the UserId to the table you'd use table.Insert(), like so:

First parameter being the table, second being the value you are inserting.

table.insert(BigAssTable, player.UserId)

I'm not entirely sure if you can change the actual name of the table, and I'm not entirely sure why you'd want to.