sdkbox.PluginFacebook not visible cocos creator

I tried to integrate facebook through sdk box but sdkbox.PluginFacebook is not visible in the project. I had successfully integrated firebase and sdkbox.PluginFirebase working fine. Both #include "PluginFacebookJS.hpp" #include "PluginFacebookJSHelper.h" are present in appdelegate.cpp and se->addRegisterCallback(register_all_PluginFacebookJS); se->addRegisterCallback(register_all_PluginFacebookJS_helper); are also there. What else I might be missing here?