Added async receiver using Azure Client Side Library. So It will listen queue in continues mode.

You need to pass parameters in JavaScript 

event parameter should be a client action with one input parameter which will be used to receive message from service bus queue.

example : "$actions.Refresh(`${messageReceived.body}`)"

note : do not change parameter name of Refresh client action

Client Action Refresh which will be used as input for JavaScript and will receive message from service bus queue