Hello Howard,
I wish there's a work around for this too. I have used almost 2 weeks of my time trying to get this to work and tried over 3 different attempts. The closes that I get is to be able to push it into what Google+ calls a "log system" in your profile but the implementation is pretty lame and doesn't make sense because you need to manually share it from your log area into the stream.
What I have heard is that Google+ is selectively allowing huge enterprises to have (write) access to their by partnering up with them but unfortunately, we are not huge enough to get ourselves heard