Added an additional tag/token 'lastelement' that contains the last el…

[ps-nl]

Added an addtional tag ("lastelement"), that contains the last element of the Topic that has triggered. This allows for OpenHAB style MQTT protocol communication, whereby 'lastelement' contains the measurement-name and 'message' the value of that variable.

I use it for reading from ESP_Easy connected sensors, and passing the values on to a virtual device.

Example:

• ESPEasy device with a BME280 sensor, that measures temperature, humidity, and pressure;
• ESPEasy publishes these measurements in the following Topics: /ESP_Easy/BME280/Temp; /ESP_Easy/BME280/Humidity; /ESP_EASY/BME280/Pressure;
• I have created a Flow with as a Trigger a MQTT-client card that listens to "/ESP_Easy/BME280/+". Note the wildcard;
• When trigerred, for each published measurement a token "lastelement" is passed to a virtual devices as the sensorname, and token "message" as the value of that sensor;
• The number of sensors / measurements defined in ESP Easy dictates the number of subtopics, and therefore the number of times this flow is triggered.
• measurements are now tracked in Insights;
• measurement values of the virtual device can be used to trigger other flows.

Note:
to get the app to compile I had to delete the "retain checkbox" from app.json. May want to put that back.
,
{
"name": "retain",
"type": "checkbox",
"title": {
"en": "retain",
"nl": "retain"
}
}

[ps-nl]

See below for Use-examples for this new tag