Extension of my W11 from 100Gb to 120GB doesn't work

Hi , I'm running the latest version of Parallels Desktop for Mac Pro Edition. I have an Intel iMac 2020 with W11 Pro 21H2. I got an message to update to 21H. I started the donwload and installation, but i have to less space in my VM. When i add 20GB more in my VM, i see that the EFI partion got 20Gb more, not the Windows part. What can i do to extend the windows part of my VM? See the picture here : https://fredbaltus.nl/roco/IMG_4951.jpeg

Thanks for the help,
Fred