[android-beginners] Cannot modify a button from the menu

Hi, I am writing a program that has a menu. Once you press the menu button and then select "Left", it's supposed to change the attributes of myButton12, an ImageButton. However, I am getting a "myButton12 cannot be resolved" error message. Please help me figure out what is wrong with this code.

[android-beginners] Hoping to change widget attributes by selecting a menu item

Hi, I am writing a program that involves a menu. Once you press the menu button and then select "Left", it's supposed to change the attributes of myButton12, an ImageButton. However, I am getting a "myButton12 cannot be resolved" error message. Please help me figure out what is wrong with this