The oOnQueueUsers will give you the numbers of agents whose presence status is set to "On Queue".
Agents who are in Queue can have zero conversation in progress (presence status == On Queue and routing status == IDLE), or can have conversations in progress (presence status == On Queue and routing status == INTERACTING).
Your response (count 9) just means that you have 9 agents logged in and with presence On Queue. But all of them are currently working on a conversation (qualifier: INTERACTING).
Thank you @Jerome.Saint-Marc for your reply.
yes, I might well be confusing things
If you look at the queue in Genesys, I need on the ones that are On Queue as far as their login status, not their routing status.
When testing, I had no users On-Queue but because some were still Interacting offline ( because they are email interactions ) The count was 9. If this was a Voice Queue, there would obviously be nobody Interacting
Thanks