Created battery attribute, cannot show it on device

Hello, I created the BatteryLevel attribute for my device (value io5, tested and working on my device), added the popup info in preferences, but I cannot get it to show on the device

How can I fix it?

I use that attribute for teltonika, try changing your attribute using io5 that you have configured.

Have you linked the attribute to your device?

I'm not sure I linked the attribute to my device, how can I check? Sorry, I'm new to traccar

Open devices page. Click on the links button and check computed attributes there.

I don't understand why it doesn't show here. Do I have to add it manually?

You're looking in completely wrong place. Please read my previous comment.

You're right, I added now and rebooted traccar server

Still not showing, what am I missing?

You need to wait for new data from your device. If it's still missing, either your device is not sending it or something wrong with your expression. I noticed that you haven't actually shown us any proof that your device is sending the IO. Do you want to provide a screenshot for that?

It's the last screenshot of the first post, but I'll send again:

Then it should work. Note that computed attributes will only be calculated for new data, not old.

I let a couple of days pass, the value of io5 changed but still nothing is showing. What am I missing?

Not sure.