How can I pass variable from C++ code to Lua script, and get that variable from Lua in turn

cocos2d-x C++
#1

I spotted a function called “CCLuaEngine::defaultEngine()->push….()” to push something into Lua’s stack. I guess this is a way to pass something to Lua from C++. Also how can I read it back from Lua script.

An example code would make it clear for this question. Thank you.

#2

By the functions bound to lua, you can get the value back.

#3

Any example code, I want to make sure I do it right.

#4

I am working on it ….Later