Error while trying to configure redis-sentinel URI

[28ori]

Hi,
Im trying to use the redis connector in Openshift.
I need to connect to redis-sentinel through openshift Service resource. my configuration:
redis.uri=redis-sentinel://my-redis-sentinel-service:my-port/0?timeout=some-timeout&sentinelMasterId=myMasterId
when I tried that I received this error:
"Cannot build a RedisURI. One of the following must be provided Host, Socket or Sentinel"
also tried to configure:
redis.uri=redis-sentinel://my-redis-sentinel-service:my-port?timeout=some-timeout&sentinelMasterId=myMasterId (no default db)
redis.uri=redis-sentinel://my-redis-sentinel-service:my-port/0?timeout=some-timeout&sentinelMasterId=myMasterId
and also tried without the 'timeout'
Does anyone know what can cause this problem?