Switch task selects the defaultCase instead of the expected case

[Trumango89]

In the workflow.json:

    {
      "name": "preprocess_switch_expression",
      "taskReferenceName": "preprocess_switch_expression",
      "inputParameters": {
        "state": "${workflow.input.state}"
      },
      "type": "SIMPLE"
    },
    {
      "name": "switch_task",
      "taskReferenceName": "switch_task",
      "inputParameters": {
        "case_value_param": "${preprocess_switch_expression.output.type}"
      },
      "type": "SWITCH",
      "evaluatorType": "value-param",
      "expression": "case_value_param",
      "decisionCases": {
        "foo": [
          {
            "name": "update_foo",
            "taskReferenceName": "foo_updater",
            "type": "SIMPLE"
          }
        ],
        "bar": [
          {
            "name": "update_bar",
            "taskReferenceName": "bar_updater",
            "type": "SIMPLE"
          }
        ]
      }
    }

class SwitchExpressionPreprocessor worker of the preprocess_switch_expression task

override fun execute(p0: Task?): TaskResult {
        taskResult.status = TaskResult.Status.COMPLETED
        taskResult.outputData["type"] = "foo"
        return taskResult
    }

[aravindanr]

The workflow definition looks correct. I suggest checking the workflow execution to see if the value of case_value_param is set correctly. It would also help us troubleshoot if you can post the workflow execution here.