[luabind] How to pass a class arg to lua function

[mos <mmo...@16...>]

Hi!

         I use luabind bind class cChar and there is a lua script function
like 

 

         function Hello(cChar* p)

                   p->Say('Hello')

         end

 

         --but how to pass the cChar to Hello in cpp file

 

     cChar* p;

     lua_getglobal(L,"Hello");

     lua_pushlightuserdata(L, p);         //there must be wrong.

     int error = lua_pcall(L, 1, 0,0);    

 

         then luabind report error.

         What can I do ? 

 

Mos