True Licence Plate

The tractor's license plate number is automatically displayed on all attached trailers and implements with license plate holders.
When you attach a trailer to tractor A (e.g., DA24 HYT), the trailer's license plate number changes accordingly.
When you unhitch and attach it to tractor B (DH67 JDT), the latter's license plate number is displayed.
The trailer's saved license plate number is not overwritten – only the displayed number changes during the attachment process.
Saving and loading settings function perfectly.