Unable to use expression `$zigbee-schakelaar.val equals “open”`

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I’ve got a similar problem. I have connected a xiaomi zigbee gateway and door sensor through mqtt. It all works perfect - status is updated immediately in pimatic.
I can use the door sensor as mqttsensor in rules, e.g.:
$zigbee-schakelaar.val changes
But I cannot use below expression:
$zigbee-schakelaar.val equals “open”

@zeldp01 I have forked your post into a new topic.

Can you please send the Device Config you have for zigbee-schakelaar?. Thanks

The device config:

{
      "attributes": [
        {
          "name": "val",
          "topic": "xiaomi/status/magnet/158d0001a22363",
          "type": "string",
          "messageMap": {},
          "acronym": "state"
        },
        {
          "name": "name",
          "topic": "xiaomi/status/magnet/158d0001a22363",
          "type": "string",
          "messageMap": {},
          "acronym": "naam"
        },
        {
          "name": "battery",
          "topic": "xiaomi/status/magnet/158d0001a22363",
          "type": "string",
          "messageMap": {},
          "acronym": "battery"
        },
        {
          "name": "ts",
          "topic": "xiaomi/status/magnet/158d0001a22363",
          "type": "string",
          "messageMap": {},
          "acronym": "tijd"
        }
      ],
      "xAttributeOptions": [],
      "id": "zigbee-schakelaar",
      "name": "zigbee-schakelaar",
      "class": "MqttSensor"
    }

The device has the following attributes:

I solved it by creating an extra variable $open with value open.
This makes below condition possible:
$zigbee-schakelaar.val changes and $zigbee-schakelaar.val equals $open

@zeldp01 said in Unable to use expression `$zigbee-schakelaar.val equals “open”`:

$zigbee-schakelaar.val equals “open”

$zigbee-schakelaar.val equals "open" should work as well. Make sure you’re using straight quotes. In the text you posted earlier you’re using curly quotes, i.e. $zigbee-schakelaar.val equals “open”. Replace these against straight quotes and it will work.