Hello zl.1,
welcome to ST community. What MCU are you using and what will be the PIN function. The Analog_mode is related GPIO mode for selected pin. You should see similar in option for your MCU as pictured in the screenshot below:
Let me know if that is what you were looking for. And you can also click on Select as Best as it will make it easier for other community members to distinguish this question from unanswered ones.
