exchange calendar not syncing -- (fixed)

Mar 15, 2013
i configure my new mi2 with the Google and corporate exchange
form some reason i cant see the exchange calendar in the mui calendar or Google calendar app
the Google account sync perfectly

i can see the account but the app say no calendar (same setting on my HTC works )
any one know how to fix it
it is in the two last releases (i don't know any other version)
the emails work ok

found solution - turn on push mail then turn it off and now all working ok