How to add UDP port range on MR2100

Hi,

How do I add a range for UDP ports when port forwarding.

As you can see in the screenshot above there is only one slot for Port

There is not Start port or End port. So I would assume that one can add a range of ports. I tried entering range of ports like this 1-60000. But that doesn't work.

It only registers the start of the range as shown in the screenshot below.

So the question is: how do I correctly enter a range for ports?

Firmware version NTGX24_10.17.08.00