Terminal Help - Reverting a Standard Mac user account back to an admin account?

I've been doing a Jamf now roll out, but have mucked up the user account by using this terminal command:

sudo dseditgroup -o edit -d UserName -t user admin

Which basically made the admin account switch to a standard user account. I now need to revert back the standard user account to admin, but am struggling to find the terminal command that works to revert back.