Freeze Character not working?

I am using the following code:

function FreezePlayer(player)
    local torso = player:FindFirstChild("Torso")
    if (torso) then
        torso.Anchored = true
    end 
end

function OnKillingStateStarted()
    UpdateGameState()
    if (repFreezable.Value and state == GameState.Chasing) then
        repFreezable.Value = false
        repGameState.Value = GameState.Killing
        -- Freeze all survivors.    
        contestants:ForEach(function(player)
            if (player ~= bloxxer) then
                FreezePlayer(player)
            end
        end)
        freezeTimer:Restart()
        freezeCooldownTimer:Restart()
    end
end

And the code does nothing. The little guys still walk around and ignore my code. I'm wondering if I should hit them.

: Tkdriverx Thanks for the reply.

I'm trying to pull out each player (default method) I use ForEach in other situations and it seems to work fine... The code below works fine for spawning.

    local useableSpawns = List(officeSpawns)
    players:ForEach(function(player)
        local character = player.Character
        if (character) then
            local humanoid = character:FindFirstChild("Humanoid")
            local torso = character:FindFirstChild("Torso")
            local spawn = useableSpawns:Choose()
            local spawnPos = spawn.Position
            if humanoid and torso then
                humanoid.Health = 100
                humanoid.WalkSpeed = 16
                torso.CFrame = CFrame.new(spawnPos.x, 5, spawnPos.z)

                useableSpawns:Remove(spawn)
            end
        end
    end)