We couldn't assign a role on this Page to mida ratchatha. Here are some things to keep in mind when assigning a role to someone:
You can assign a role to a person who you're friends with on Facebook by entering their name or email address.
You can assign a role to a person who has a Facebook account by entering their email address.
If you're not able to assign a role to someone, check if they've allowed you to search for them on Facebook.
You need to enter a valid email address that's associated with the person's Facebook account.
The person can't already have a role on the Page. Learn more about changing someone's Page role.