Sequential Numbering in Fieldmaps for a Text Field

[CiaraMarleneKeenan]

Hello, I would like to know if it is possible to auto-populate Sequential Numbers for a TEXT field in Fieldmaps? Last number that was used is 811. I would like to +1 in increment. Typically, I use Sequential Number() Python calculation but I need something equivalent in fieldmaps for a text field.

Thank you!

[mneer]

Perhaps this will help?

var <variable1> = Max($layer, '<field_name1>')
var <variable2> = Number(<variable1>)
return <variable2> + 1

 Right from Tech Support Topic "Add auto-sequential values using Arcade in Map Viewer"

Convert text to numbers with ArcGIS Arcade | Documentation  this may help also?