"The URL is not valid" when you use the variable $COMPUTER_IP$ in web connection

Hello Support,
we use many variables like $CUSTOMER_NAME$, $COMPUTER_NAME$ and $COMPUTER_IP$.
But when you use $COMPUTER_IP$ in a web connection like "https://$COMPUTER_IP$", the error message "The URL is not valid" comes up.
The connection works, but this message is a little bit confusing to our users.
Can you please fix this ?

Kind regards
Andreas