Event _worksAfterCreate to check a value entered in a field?

[JoseSanchez]

Good morning everyone,

I need to check that  the value entered in one text field in the attributes inspector is numeric.

In what event in the Edit Widget can I check it?  In the "_worksAfterCreate" event?

Thanks

[JoseSanchez]

How do I check for a 

attInspector.on("attribute-change", function(evt)

in the  Edit Widget?

Using the attribute inspector | ArcGIS API for JavaScript 3.20