I am working on Adobe Campaign V6 to write a connector to extend my own delivery channel.
I can add my own delivery channel to a workflow, and send to subscription correctly.
But the number after my "WeChat delivery" is "0 - Ok". The next is a screen shot.
The send status is the follow, success number is 5.
So I think the correct number after "WeChat delivery" should be "5-OK".
Would you like to tell me what affect the completed number after an activity?
Could you check the properties of the activity? I'm not sure about your custom channel, but in regular activities you can manage the content of outbound transition. For example:
If I'm correct, the outbound transition of a delivery activity will either be empty (contain no data) or will contain the same data as the inbound activity (in your case 37).