Expression to edit marker comment

[AmirE]

Hi,

I have a layer that has a 'layer marker' on it, and I want this marker comment to always show the opacity value of this layer. I'm using the following expression but it doesn't work:

thisLayer.marker.key(1).comment = "Opacity: " + transform.opacity + "%";

it gives me this error: "Error: couldn't turn result into numeric value"

What is wrong? is there another way?

Thanks!

[Mylenium]

Marker comments are read-only. You cannot modify them with expressions.

Mylenium

[AmirE · Accepted solution]

That' unfortunate 😞

Thanks for your answer.

[Mathias Moehl · Accepted solution]

In general, expressions cannot write or modify anything, except the property they are applied to. A script could do that, but you would need to run it manually each time you want to update the marker.

[AmirE]

Hopefully this will change in he future versions. Thank you!