Windows cannot be installed to this disk. the selected disk is of the mbr partition table.on efi system windows can only be installed on gpt disk

Hi, Guys

I want to windows 10 on Imac 21.5 inch mid 2011, with Monterey , OCLP 2.3.2.

Using BootCamp, but when I reach when I need to install windows on partition, it doesn't want to its giving me this error:

windows cannot be installed to this disk. the selected disk is of the mbr partition table.on efi system windows can only be installed on gpt disk

Was watching this video, but facing th8s problem.

https://youtu.be/7E5uFvNlQ0k?si=8fMssLjUIjw2SzJ0