Hi,
I am trying to label a layer with a custom text instead of values from a field. I found below documentation online:
"You can use a custom attribute expression written in Arcade instead of an attribute field. Click Use expression and use the editor window to create the expression."
(from https://doc.arcgis.com/en/arcgis-online/create-maps/configure-labels-mv.htm)
I do not see use expression option as shown in below screenshot.
Is it because customizing label in map image service layer is not supported?
