ssh Cpu Utilizastion

Hi Guys

I am currently switching between opmanager 5.5 on linux to Opmanager 5.6 on windows

How ever when performing the cpu utlization via ssh it is not working.
I have noticed there is a change between 5.5 and 5.6 intowards the command it runs to retrieve the information

5.5
/usr/bin/vmstat 1 3

5.6
top b n 1 | grep 'CPU[0-9]* states:'

All other resource monitoring via ssh is working fine

At this stage I do not want to use ssh
Please advise me on how to fix this problem