How to get the name of the user interaction with the bot?

"Username is sent to the bot whenever a user sends a message to the bot. Here is how you can access the username.

1. If using the hosted code , you can extract it out of the event object. Use the below code to get the user name.

""event.senderobj.display"".

2. If using the callback , then this is sent inside the additional parameter called 'senderobj' . Parse out the field called 'display' from the 'senderobj' to get the username.

Sample:

senderobj = {""channelid"": ""195173021"",""channeltype"": ""fb"",   ""display"": ""John""}"