Examples of passing unity objects from c# to lua and lua to c#

[plasmalasgun]

Can you provide examples:

• how a unity object created in lua can be passed to c#

//c#
public static int testfunc( ILuaState lua )
{
GameObject pGameObject = (GameObject)lua.ToUserData( 1 );
Debug.Log("pGameObject.name "+pGameObject.name );
{

-- Lua
local goPlaceholder = GameObject._New("testObject")
testfunc( goPlaceholder )

ERROR

NullReferenceException: Object reference not set to an instance of an object

• how a unity object created in c# can be passed to lua

Thanks in advance!