The docs are inconsistent:
1) Mikrotik-Wireless-VLANIDtype
https://wiki.mikrotik.com/wiki/Manual:R ... dictionary
2) Mikrotik-Wireless-VLANID-type
https://wiki.mikrotik.com/wiki/Manual:RADIUS_Client

Also in the logs it appears as another format entirely?
MT-Wireless-VLAN-ID
and
MT-Wireless-VLAN-ID-Type
What is the correct format to be sent in the RADIUS accept accept response?

Answer to my own question, the correct parameter to send is:
Mikrotik-Wireless-VLANID-type
and
Mikrotik-Wireless-VLANID