Script wont function properly?

This script wont work, I changed the path, but it wont work still. Help!?

local player = Game.Players.LocalPlayer

local swordMesh = script.Parent

local GuiBar = player.PlayerGui.StarterGui.Frame.TextBox --Change to correct path.

GuiBar.FocusLost:connect(function() --When someone is finished typing into the TextBox,

pcall(function()

swordMesh.TextureId = "http://www.roblox.com/asset/?id="..tostring(tonumber(GuiBar.Text)-1) --Try to change the texture.

end)
end)

If you're using a script, have you tried using a localscript instead?

What do you want it to do?? And is it in a localscript??