Extracting Recurrence trigger parameter in Interval throws exception

[chris-w-dev]

When extracting a Recurrence trigger with a parameter in the Interval field, an exception is thrown because the interval property is expected to be an integer and not a string.

     "parameters": {
        "RecurrenceInterval": {
          "defaultValue": 3,
          "type": "Int"
        }
      },
      "triggers": {
        "Recurrence": {
          "recurrence": {
            "frequency": "Minute",
            "interval": "@parameters('RecurrenceInterval')"
          },
          "type": "Recurrence"
        }
      }

Exception:
The input string '@parameters('RecurrenceInterval')' was not in a correct format.