How to get virtual device to show text from variable?

Use an Advanced virtual device instead.
You can set the device status to anything you like.

When you use a Better Logic string-variable instead of the build-in variable, it shows the value without needing additional flows to set the status:

Example, I created a Better Logic variable called Wind_angle
AVD settings:

Next, select Textfield 1, which I called WindAngle, as Status Indicator:

So, as soon as the value of the variable changes, it’s new value is shown as status indicator right away.

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