we would like to fail over in inbound event socket:

dial in -> park 

origin -> park

uuid_bridge

originate {continue_on_fail=^^:NO_USER_RESPONSE:UNALLOCATED_NUMBER:NORMAL_TEMPORARY_F
AILURE:NO_ROUTE_DESTINATION:CALL_REJECTED:RECOVERY_ON_TIMER_EXPIRE:NETWORK_OUT_OF_ORDER,fail_on_single_reject=^^:USER_BUSY:NO_ANSWER:ORIGINATOR_CANCEL}sofia/gateway/gw01/xxxx|sofia/gateway/gw02/xxxx &park()

it will not hangup if the first gateway fails with ORIGINATOR_CANCEL.

how can set continue_on_fail and fail_on_single_reject?