correctly connect opner to external bell

hi I should connect an opner to a door release button and to an old bell. I connected the blue and purple wires to the button and the door opens correctly, but I can’t figure out where to connect the two cables coming from the doorbell I tried to connect them to green and black. could you advise me what i could try?today I made many attempts but none worked

Hi! I had also a external bell, and can help you! Do you still need a tutorial for it, or have you found it out yourself in the meantime!?