Gauge ui_control used with ui_gauge without a payload

Dashboard
1

Oops, sorry about the previous post. Let me try this again.

I have read several posts about using a ui_control with a ui_gauge. I am trying to modify the sectors / segments and I would only want to do it once after deployment. The attached code is based on another post I saw. The problem I am having is when I send the msg without a payload I get the following error.

“TypeError: Cannot read property 'Avail|number:1' of undefined.

Inside the gauge I have the following in the Value Format field:

{{msg.payload.Metrics.Avail | number:1}}

Is it possible to change the gauge sectors / segments by just sending msg.ui_control WITHOUT the msg.payload? (It seems like a valid msg.payload is necessary otherwise it will throw an error).

Note that if I uncomment and send the msg. payload with msg.ui_control it works.

var seg1 = 70;
var seg2 = 90;

/*
msg.payload = {
    "Metrics": {
        "Avail": 42
    }}
        
console.log("Avail=", msg.payload.Metrics.Avail);
*/

msg.ui_control = {
    "seg1":seg1, 
    "seg2":seg2
};

return msg;
4 
msg.ui_control = {
    "seg1":seg1, 
    "seg2":seg2
};
delete msg.payload
return msg;

But as far I know the ui_gauge resets on options change so the outcome may not satisfy your needs.

5

Thanks for the quick reply. That seems to have done the trick!!!