How do I pass response values from extension to custom response type in IBM Watson Assistant chat?

user_345014 0
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The below JSON defines custom response for the client to allow custom UI. As per the documentation https://cloud.ibm.com/docs/watson-assistant?topic=watson-assistant-response-types-reference#user_defined I can define "anything" for the "user_defined" object but I am failing to understand how to pass the variable as provided by my extension response.

{
  "generic": [
    {
      "user_defined": {
        "default_color": "blue",
        "template_name": "color_picker",
        "my_response_value": "???"
      },
      "response_type": "user_defined"
    }
  ]
}
watson-assistant ibm-cloud chatbot ibm-watson
1 Answers

So after some trial and error it seems that it works with the expression lang as described here https://cloud.ibm.com/docs/watson-assistant?topic=watson-assistant-call-extension#extension-check-status

For example

{
  "generic": [
    {
      "user_defined": {
        "default_color": "blue",
        "template_name": "color_picker",
        "my_second_value": "${step_170_result_1.body.base_code}"
      },
      "response_type": "user_defined"
    }
  ]
}

Here the property "my_second_value" will be replaced by the value from the "session variables/extension response". Your reference will differ in the step value and result value.

user_3450140
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