I was able to create a callback task but its not associating the phone number with it which in turn doesnt show the callback button in twilio flex panel.
here is the api used: https://taskrouter.twilio.com/v1/Workspaces/workspaceId/Tasks
here is the payload sent.
task channel: callback,
workflowsid : "",
attributes: {}
so is it possible to create a callback task with phone number associated to it?