max_allowed_packet error (no replies)

Hi,

I am using mysql innoDB engine and i am facing issue with max_allowed_packet.

Previously value for max_allowed_packet = 1024, to resolve issues i was changed it to 64M in my.ini file and restarted the service after that all my issues resolved.

But after one day, it was reverted to 1024 when i apply show variables option but at the same time i was checked in my.ini file and it consists 64M, then why it was reverted to 1024 when i apply show variables ?.

what is the permanent solution to maintain 64M ?

Thanks,
Ra na la