Asterisk queue SL and SL2: not updating

Hi Guy’s

I have configured a Queue as you can see bellow it’s 6500.
when user’s call to 6500 i have ringall setup to call my 2 agents 6002 and 6000 and that works fine.

My issue is the W:0 SL AND SL2 value’s dont update , I 'm assuming those value’s are there to measure SLA ?

queue show
6500 has 0 calls (max unlimited) in ‘ringall’ strategy (5s holdtime, 9s talktime), W:0, C:1, A:5, SL:0.0%, SL2:0.0% within 0s
Members:
SIP/6002 (ringinuse enabled) (Unavailable) has taken no calls yet
SIP/6000 (ringinuse enabled) (Not in use) has taken no calls yet
No Callers

So after a call’s been made the new update is as per below I can see that C:2 incremented indicated 2 calls received but what about the SL and SL2 why are they at 0% ?

Even if I call and drop the call they don’t update., I 'm trying to see how many calls came to the qeue , how many calls were answered and how many calls were dropped , how do i do that ?

queue show
6500 has 0 calls (max unlimited) in ‘ringall’ strategy (6s holdtime, 13s talktime), W:0, C:2, A:5, SL:0.0%, SL2:0.0% within 0s
Members:
SIP/6002 (ringinuse enabled) (Unavailable) has taken no calls yet
SIP/6000 (ringinuse enabled) (Not in use) has taken 1 calls (last was 6 secs ago)
No Callers

What is value of servicelevel in your /etc/asterisk/queues.conf file ?

I got this in queues.conf

monitor-type = MixMonitor
[6500]
fullname = 6500
strategy = ringall
timeout = 15
wrapuptime = 15
autofill = no
autopause = no
joinempty = yes
leavewhenempty = no
reportholdtime = yes
maxlen =0
musicclass = default
servicelevel =100
announce-holdtime = yes
announce-frequency = 90
announce-round-seconds = 0
eventwhencalled = yes

queue-youarenext = queue-youarenext ; “You are now first in line.”
queue-thereare = queue-thereare ; “There are” …
queue-callswaiting = queue-callswaiting ; … “calls waiting.”
queue-holdtime = queue-holdtime ; “The current est. holdtime is” …
queue-minutes = queue-minutes ; … “minutes”
queue-seconds = queue-seconds ; … “seconds”
queue-thankyou = queue-thankyou ; “Thank you for your patience.”
queue-lessthan = queue-less-than ; … “less than” …
queue-reporthold = queue-reporthold ; “Hold time” …
periodic-announce = queue-periodic-announce ; “All reps busy, wait for next”

member = SIP/6000
member = SIP/6002