an error for require another path lua file in android

if I add new script path in c++ by addSearchPath,then require an lua file in the new path,
should show error: can not get file data of %s, it’s code in Cocos2dxLuaLoader.cpp, loader_Android function.

I just want my lua script can autoupgrade,so do this.
It cant update apk path file in android, so I must add a new script path.