PROS: Labeling a pros::lcd button

I have some code like the following:

    lcd::register_btn0_cb(left_btn);
    lcd::register_btn1_cb(middle_btn);
    lcd::register_btn2_cb(right_btn);

It creates the buttons, but how do I change the button labels? I searched the web already, couldn’t find anything on the docs or on the web. Does anyone know how to do this?

Please use code tags around your code. That’s these:``` Put three of them and new lines with your code and then three more. It formats your code.

These functions aren’t supposed to create the button. It sets the function to call when you press the respective buttons.

How do I create the button?