Const uint8_t asked, how to display an image which may vary?

[david_2018]

Try

uint8_t* actualBitmap = bitmapA;

@J-M-L

if that works it means the drawBitmap() does not expect data to be in PROGMEM.

The drawBitmap function in the Adafruit library is overloaded to take a const uint8_t from PROGMEM, or a uint8_t that is not const from SRAM.