set_attribute() with ElasticMQ not supported?

[Anjali]

Hi,

I am writing some test code to set attributes of queue using ElasticMQ.

conn = conn.create_queue('test_queue')

q = conn.get_queue('test_queue')

q.set_attribute('VisibilityTimeout', 60)

The VisibilityTimeout value is not updated to 60 (created with default value of 30).

Is this unsupported?  If so, is there an alternate way of updating attributes with ElasticMQ?

Thanks

Anjali