error when selecting all databases

[tamalerhino]

Hello, when i put in "all" for INSTANCES = ["all"]
it errors out and wont run, it will run when i give it an instance name, just not when i choose all, here is the log output

START RequestId: a4501243-e1c4-11e7-8c05-5567e56bdd5f Version: $LATEST
Processing Snapshots for instance: all
An error occurred (DBInstanceNotFound) when calling the DescribeDBInstances operation: DBInstance all not found.: DBInstanceNotFoundFault
Traceback (most recent call last):
File "/var/task/rds-copy-snapshots.py", line 137, in main
response = rds.describe_db_instances(DBInstanceIdentifier=instance)
File "/var/runtime/botocore/client.py", line 314, in _api_call
return self._make_api_call(operation_name, kwargs)
File "/var/runtime/botocore/client.py", line 612, in _make_api_call
raise error_class(parsed_response, operation_name)
DBInstanceNotFoundFault: An error occurred (DBInstanceNotFound) when calling the DescribeDBInstances operation: DBInstance all not found.

END RequestId: a4501243-e1c4-11e7-8c05-5567e56bdd5f
REPORT RequestId: a4501243-e1c4-11e7-8c05-5567e56bdd5f Duration: 1420.47 ms Billed Duration: 1500 ms Memory Size: 128 MB Max Memory Used: 45 MB