Is it possible to change Port in alredy existing REST VirtResponse Port?

Hello,

i've created a REST Virt Response with port and path. 
But now i need to change this port on another port. Is it possible to do that without deleting existing and creating a new REST Virt Response with different port.

It is strange, that i can change it in REST Virt Response Properties but in Request Editor it stays the same.
Scrinshots is attached.

Thanks.
Tatiana