The trunk doesn’t open!

Hello guys I’ve recently been an audi a2 that has been treated pretty badly. I’ve already fixed some bugs like ZV window lift mirror without function. Since one has changed the driver door and does not notice that the pin occupancy between door and vehicle does not match. So now to my problem since that has been fixed with the door everything goes again except the escape from the trunk. I checked the storage engine at the tank. Everything else in the tailgate works auc h only the pushbutton and motor are without function. Is there still a control rope in the trunk? Thanks in advance Thomas