topic Arcade: MapViewer pop-ups not loading in field values if field is referenced using a variable - browser loading issue? in ArcGIS Experience Builder Questions

Arcade: MapViewer pop-ups not loading in field values if field is referenced using a variable - browser loading issue?

TaraHaynes — Fri, 08 May 2026 21:06:54 GMT

UPDATE:

I have determined that my original assumptions that functions were causing this issue was incorrect. I have added updated info at the bottom of the post.

Original:

On the left-hand side is the pop-up in the Map Widget. On the right-hand side is the Feature Info widget, showing the pop-up as expected. All of the missing data/styling on the map widget pop-up was generated by functions within Arcade (in the pop-up in MapViewer), which is why I suspect them to be the culprit.

Here is an example of one of my functions:

function label (status) { if (status == "No Survey Data") { return "Not Surveyed" } else if (status == "No Nest Assessment Data") { return "Not Surveyed" } else if (status == "NA") { return "N/A" } else if (Find("Unknown",status,0) > 0) { return "Unknown" } else { return status } }

Here is how I am bringing these values into the HTML:

Update:

When I reference a field using a variable, as below, the value will not show up in the MapViewer pop-up:

var fldname = "NestStatus_2016" return $feature[nestfield_name]

if the field name is called directly, as below, the value appears in the pop-up:

return $feature.NestStatus_2016

If I reference the field directly at all in the script, even as a variable that doesn't get used, it will then show up in the pop-up where $feature[nestfield_name] is used. Which is to say that I have a workaround and my pop-up is functional, but I have to list every field I want to reference so that it can show up (this is a simplified version of what my script is doing):

// referencing list of fields i need directly var flds = [$feature.NestStatus_2024,$feature.NestStatus_2025,$feature.NestStatus_2026] // calculating # of years between today and the year of nest detection var yrs = Year(Now()) - $feature.Year_Detected year_range = Array(yrs) tbl_rows = `` for (n in array) { yr = $feature.Year_Detected+n fld = `NestStatus_${yr}` tbl_rows = `<tr><td>yr</td><td>$feature[fld]</td></tr>`+tbl_rows } return tbl_rows

I know that 'year' fields are not great data management, and I hope to improve that in the future, but I suppose this is what I'm dealing with for now. Either way, this seems like it could be some kind of bug related to how the browser is loading pop-ups... interested to know if anyone else has run into this.

Re: Arcade outputs from Functions not displaying in Map Widget pop-up

ZachBodenner — Tue, 05 May 2026 21:01:49 GMT

I can't imagine why this would be the case based solely on your provided code, but I notice that you do have at least one variable (bgcolor) you haven't shown so I suppose I'll ask: Are you sure they're not showing up? Might they be white text on white background somehow? There's a setting in the feature info widget that can override some popup arcade, so perhaps it's doing that which is why it looks black in the feature info widget?

Re: Arcade outputs from Functions not displaying in Map Widget pop-up

TaraHaynes — Wed, 06 May 2026 15:05:33 GMT

There is no text at all, I did double-check whether it had turned white. To that end, there is other text in the pop-up (not generated by functions) which appears as expected in the Map Widget pop-up and is black. I have my 'Theme' text in ExperienceBuilder set to black.

Bgcolor changes the colour to the left of the Status and Occupancy value - you'll notice that it's all grey in the left-hand pop-up (Map Widget), while yellow is appearing properly in the right-hand pop-up (Feature Info Widget), which indicates that that function isn't working either in the Map Widget pop-up.

For posterity, here is the bgcolor function:

function bgcolor (status) { if (status == "NA" || status == "No Survey Data" || status == "No Nest Assessment Data") { return `#e3e3e3` } else if (status == "Not Detected" || status == "Inactive" || status == "Destroyed") { return `#FFD899` } else if (status == "Resident" || status == "Breeding" || status == "Active") { return `#639C5F` } else { return `#e3e3e3` } }

Re: Arcade outputs from Functions not displaying in Map Widget pop-up

ZachBodenner — Wed, 06 May 2026 15:08:47 GMT

Are you willing/able to share maps and or data? I'd be curious to look at the whole thing and see if I can reproduce that error. If you are, feel free to send me a private message to coordinate that.