Name of dynamic simple queue from DHCP Server

Hi,
There is an routeros DHCP server connected to routeros UserMan database via Radius.
Userman users’s username is the MAC address of the user’s interface which gets the Ip address.
I’ve configured an automated simple Queue based on the user profile.
Automatic generated name of that simple queue is something like this:
dhcp<00:03:FF:38:B3:12/1:0:3:ff:38:b3:12/dhcp1>
[admin@MikroTik] /queue simple> print
Flags: X - disabled, I - invalid, D - dynamic
0 D name=“dhcp<00:03:FF:38:B3:12/1:0:3:ff:38:b3:12/dhcp1>”
target-addresses=10.0.0.33/32 interface=all parent=none packe
direction=both priority=8 queue=default-small/default-small
limit-at=100/100 max-limit=100/100 burst-limit=0/0 burst-thre
burst-time=0s/0s total-queue=default-small

The question: How should i configure RouterOs to set the user lastname from the usermon database in that dynamic generated queue, or any other data field except of MAC because it is already there. I need that because i use automated traffic graphic generation feature for simple queues, and it is hard to identify which graphs belongs to which user based only to MAC address.

by example what i want the dynamic simple queue to look like this:
dhcp<00:03:FF:38:B3:12/JohnSmith/dhcp1>

Thank you

+1 for that.