Form Fill - Creating Multi-Line under Dropdown

I am working on creating a form filled document in Adobe Acrobat Pro 2020.  I have a few fields that require a dropdown with two unique addresses for user to choose from. Currently the field runs the address accross the page and I'd like to to do a multi-line to make better use of space.

I've seen different keystroke scripts for multi-line addresses in discussions over the several years but nothing I've added under Dropdown Properties/Format/Custom Keystroke Script is working?  Wondering if I have entered a wrong field in the script below? Should I be entering the addresses as part of the item under Options/Item?

Under General/Name I've entered "Location" 

Under Options/Item I have the following Items:

Item: Illinois

          Export Value: 0

 Item: Henrietta

           Export Value: 1

Commit selected value immediately is selected.

Under Dropdown Properties/Format/Custom/Custom Keystroke Script 

// Custom Keystroke script for combo box
(function () {

if (!event.willCommit) {

// Set up an array of addresses. \r = carriage return
var aAddr = [];
aAddr[0] = "555 Illinois BLVD.\rNew York, NY 10013";
aAddr[1] = "201 Henrietta St.\rNew York, NY 10019";

// Get the export value of the selected item
var ex_val = event.changeEx;

// Get the corresponding address
var addr = aAddr[ex_val];

// Populate the text field with the address
getField("location").value = addr;
}

})();