Arcade expression not working automatically on web app / field app

Question

I want to populate an attribute based on another attribute value using arcgis arcade on a web map / field map.

Suppose I have 2 attributes: attribute1 and attribute2. Attribute1 will be updated if Attribute2 has certain value. Here is the code on attribute1:

if ($feature.attribute2 != "b")
{
return "yy";
}
else
{
return "xy";

The formula is correct. But why attribute1 is not updated automatically when attribute2 is updated / inserted (I update the atribute by changing the column value of atribute2) ?

Here is the screenshot:

ChristopherCounsell · Answer

In the form. Where you have configured the arcade expression to calculate it.

Can you show your form in map viewer and were you are applying the edits?

yockee · Answer

How to check if editing and calculation are enabled ?
My service is a feature service with update geometry and attribute
enabled...

ChristopherCounsell · Answer

Do you have both editing and calculation enabled on the feature in the form? If so, the expression won't run:

https://doc.arcgis.com/en/field-maps/latest/prepare-maps/configure-the-form.htm#ESRI_SECTION2_5F65DF4B642C4A4D9CAFE6A4BF6BB676