Wrong value of OIDs of indexes for class-map

hi

I have a policy-map

Policy Map BRNZ

Class CDN

police cir 4000000

conform-action transmit

exceed-action drop

i was use cbQosCMPostPolicyBitRate ( 1.3.6.1.4.1.9.9.166.1.15.1.1.11 ) to get the amount of traffic

but when the traffic exceed 4.3 Gbps the router start send wrong value I test it by SNMP tester and

i already use PRTG

​

so i decided to start use 64 bit counter cbQosCMPostPolicyBitRate64 ( 1.3.6.1.4.1.9.9.166.1.15.1.1.29 )

i don't see any value for this OID on my router it end with 1.3.6.1.4.1.9.9.166.1.15.1.1.27