Problem with Simple Queues

Hi,
I thought that it was time for me to approach Mikrotik Queues and make some experiments with it to figure out how to limit and prioritize traffic on my LAN for certain IPs, interfaces, etc.
So, in Simple Queues, I set 2M donwload and upload limits for one IP of my LAN. It was simple to set and works great.
I deleted that setup, and I tried to limit the bandwith of my Mikrotik’s wlan2 wifi interface, but it doesn’t work. I checked it by using speed test. It was as if I hadn’t set the limit.

/queue simple
add comment="2m limit Wlan2 5Gh" max-limit=2M/2M name="2M limit WLAN2" target=wlan2

How comes?
Thanks