Changing RAM values in order to see specific data

[roldes]

Hi,

I'm sorry if this is the wrong section or if it was already asked, but I can't find anything about it.

I need some help in understanding how to manage specific things if I want to write an action replay code.

I would like to take a value in a specific address (enemy HP) and show it on screen, how could I do that? I know the address and how to activate the code with a specific button, but when I need to show the value somewhere I'm pretty lost.

Can you give me advices on how to approach the problems related to the actual graphic on screen?

Thank you to anyone that can help me!