How to Reset ALL Virtual ip:port stats and Overall Stats

When I type in "bigtop" - I am seeing all old stats, I need to reset all stats to 0.

 

What is the command to type in to reset all STATS for Bits In---Out---Conn

 

and for all Virtual ip:port to Reset ALL In -- Out----Conn to reset it back to 0 ?

 

 

Whoever knows how to do this, can you type in the commands while it is serving traffic (e.g. - do it on a ACTIVE LTM? ) ?

 

Thanks.