Trend Line not live function

[sidamos]

There is a workaround:

Auto-refresh charts and widgets in MainUI

As people migrate over to OH3 and the MainUI from other UIs, many are surprised to find that MainUI charts are static on a loaded page and won’t refresh unless the page is reloaded. Here I’m providing a fairly simple solution that allows you to set up timed, automatic refreshes for charts on a page (or another widget that you have configured with custom content that doesn’t refresh). When Do Widgets Refresh? So many of the standard widgets and components do respond to changes in item states …