assign office 365 license with Nintex

HI

we have Both Plan E4 and Plan E3 for office365. when i try to use Live action to assign office365 license, it's need an ID, i don't know what exactly is. so i  use retrieve license plans from live action it always back with same ID (domain:ENTERPRISEWITHSCAL) whether i chose E3 user or E4 user.

then i back to assign office 365 license with above ID. it always assgin E4 to the user.

How do i do ? anyone can  help me?