Fact you see the exit named as "Exit 2", seems to indicate you made/download a custom configuration for that plane, which is wrong. The configuration that comes with GSX for the PMDG 777 calls the exit exactly like the PMDG FMC so, they should appear as "L Entry xx" or "R Entry xx".
Use the airplane configuration dialog, press the Reset button, so GSX will use its own default configuration.