Display Export Value of dropdown instead of Item

[NHJB MHP]

I'm trying to show the Export Value of a dropdown instead of the selected option i.e. the user selects BLACK but the export value of BLK is actually displayed.  I can find lots of discussions on how to pull the export value and display it or use it to trigger another response in another field and I can usually tweak my existing JavaScripts when I need something new but I cannot seem to wrap my head around this!

This is my latest (failed) attempt

var f = this.getField("eyes");

if (event.value == "Black - BLK")

f.value = "BLK"

I'm using Acrobat PRO DC.

Any help is appreciated,

Thanks

Meabh

[Nesa Nurani]

Do you use any script, and where did you put the script?

On mobile, scripts will not work.