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@Daniele I have modified the script and here is your request,

var myImports = new JavaImporter(java.lang, java.util, org.mycontroller.standalone.utils.McUtils, org.mycontroller.standalone.message.IMessage);

with(myImports) {
  // get your gateway via uuid
  var myGateway = mcApi.uidTag().getByUid("my-test-gateway").getResource();
  
  // Import message type
  var Message = Java.type("org.mycontroller.standalone.message.IMessage")
  
  // create message object
  var message = Message.getInstance()
  
  // update gateway id.
  message.setGatewayId(myGateway.id)
  
  // update message type
  message.setType("Internal")
  
  // update message sub type
  message.setSubType("Reboot")
  
  // set sensor id as 255 for node message
  message.setSensorId("255")
  
  // set acknowledgement status
  message.setAck(0)
  
  // set empty payload, but json conversion throws excepton for empty, so set it as "0"
  message.setPayload("0")
  
  // update your node EUI
  message.setNodeEui(21)
  
  // send Raw Message
  mcApi.sensor().sendRawMessage(message);
}

@Daniele some example to send the payload.
Note: I didn't test this in practice. Please let me know if you face an issue.

var myImports = new JavaImporter(java.lang, java.util, org.mycontroller.standalone.utils.McUtils);

with(myImports) {
  // get your node/sensor/variable via uuid
  var mySensorVariable = mcApi.uidTag().getByUid("abc").getResource();
  
  // set new value
  mySensorVariable.value  = 2
  
  // send paylaod
  mcApi.sensor().sendPayload(mySensorVariable);
}

@RMF69 Do you see any error on the browser console and/or in MyController log file?

@RMF69 Click on the Edit icon on the Level variable and use the id from the URL.

in version 1.5, you no need to hardcode rzModule on mycontroller/www/app.js. We have an option on UI to update angular modules.

@RMF69 Can you report your MyController version? and if you modified the script please report your script.

@RMF69
Have you configured email server?
can you post your complete script?

@Aneantisor We do not have documented anywhere about default settings.
When we do a fresh install we see default settings/values.

@Aneantisor

Where can i find the default setting ?

Settings >> Metrics >> Data Retention Settings

I believe the issue is due to binary data in your old database.

@Aneantisor have you modified default data retention settings?
If you increased the raw data retention settings, you may face this issue.
Also for binary data, reduce the duration.
We do not have any aggregation for binary data.
Binary data will be kept as is.

would it help to move to an mqtt gateway ?

I believe gateway may not be an issue here.
are you using serial gateway?

@Aneantisor Did you check CPU usage for MyController?
Database size may be an issue.

• How many nodes/sensors do you have?
• What is the message(commands to your gateway and from your gateway) rate MyController will receive/send per minute?

MyController is not supported yet for java > 9.
For now, JDK 8 will be a good choice for MyController.