Hello Bill Sousan:
Thank you for using our community.
Please always mention the device you are using, so we can provide accurate answers.
If you are talking about the KE02 as in your other post then this device only has internal pull-ups, not pull-downs, so that is why you cannot choose a direction in the Init_GPIO component.
About pin names, the KE02 has a pair of 32-bit registers called GPIOA and GPIOB wrapping 8-bit port pins. See below from the reference manual:

I hope this clarifies.
Best regards,
Jorge Gonzalez
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------