forcefield function doesnt work? [closed]

Force Fields don't go inside the player's torso. It only goes inside the character:

function newPlayer(player)
    local ff = Instance.new("ForceField")
    ff.Parent = player.Character
end

game.Players.PlayerAdded:connect(newPlayer)

Also, did you know that Instance.new() has 2 arguments? The object and the parent! So line 3 isn't needed.

function newPlayer(player)
    local ff = Instance.new("ForceField", player.Character) --Notice the "player.Character"
end

game.Players.PlayerAdded:connect(newPlayer)

EDIT

Like how the Jash50 said. Maybe the character hasn't been added yet because this script runs when the player joins the game. But when this happens the game isn't fully loaded for that player. Use this script to wait until the character is loaded.

game.Players.PlayerAdded:connect(function(plyr)
    plyr.CharacterAdded:connect(function(char) --Wait for the character to be added.
        local ff = Instance.new("ForceField", char)
    end)
end)

Also, if the player dies the character is added again so the function is triggered again. You don't need to have any Died event here.

Maybe the character doesn't loaded yet.. so you can make it like this:

game.Players.PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(character)
        local ff = Instance.new("ForceField")
        ff.Parent = character.Torso
    end)
end)

Edit:

This should work:

game.Players.PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(character)
        local ff = Instance.new("ForceField", character)
    end)
end)