**Example 1: To modify an instance's capacity reservation targeting settings** The following ``modify-instance-capacity-reservation-attributes`` example modifies a stopped instance to target a specific capacity reservation. :: aws ec2 modify-instance-capacity-reservation-attributes \ --instance-id i-EXAMPLE8765abcd4e \ --capacity-reservation-specification 'CapacityReservationTarget={CapacityReservationId= cr-1234abcd56EXAMPLE }' Output:: { "Return": true } **Example 2: To modify an instance's capacity reservation targeting settings** The following ``modify-instance-capacity-reservation-attributes`` example modifies a stopped instance that targets the specified capacity reservation to launch in any capacity reservation that has matching attributes (instance type, platform, Availability Zone) and that has open instance matching criteria. :: aws ec2 modify-instance-capacity-reservation-attributes \ --instance-id i-EXAMPLE8765abcd4e \ --capacity-reservation-specification 'CapacityReservationPreference=open' Output:: { "Return": true } For more information, see `Modifying an Instance's Capacity Reservation Settings `__ in the *Amazon Elastic Compute Cloud User Guide for Linux Instances*.