get mycf['rowkey']['column_name'] return 'Value was not found' in cassandra-cli

[Yan Chunlu]

connect to cassandra-cli and issue the list my cf I got

RowKey: comments_62559
=> (column=76616c7565,
value=28286c70310a4c3236373632334c0a614c3236373733304c0a614c3236373737304c0a614c3236373932324c0a614c3236373934364c0a614c3236383137314c0a614c3236383330334c0a614c3236383934314c0a614c3236383938394c0,
timestamp=1312791934150273)


and using
get mycf['comments_62559'] could return
(column=76616c7565,
value=28286c70310a4c3236373632334c0a614c3236373733304c0a614c3236373737304c0a614c3236373932324c0a614c3236373934364c0a614c3236383137314c0a614c3236383330334c0a614c3236383934314c0a614c3236383938394c0,
timestamp=1312791934150273)



but
get mycf['comments_62559'][76616c7565];

returns 'Value was not found'

did I do something wrong?