networkName is not working (at least in OpenStack)

[mhshams]

in Openstack, when there are more than one network available in a tenant (project), brooklyn failes to create vm instance with following error message from jcloud:

[{"badRequest": {"message": "Multiple possible networks found, use a Network ID to be more specific.", "code": 400}}]

I've tried to set the networkName in brooklyn.properties, but the result was the same.

brooklyn.location.named.<my location>.networkName=<network name>