Changes %u to %d, because lua_pushfstring does not recognize them.
Changes %u to %d, because lua_pushfstring does not recognize them.

ignacio/LuaNode,ichramm/LuaNode,ichramm/LuaNode,ichramm/LuaNode,ignacio/LuaNode,ignacio/LuaNode,ignacio/LuaNode,ichramm/LuaNode