Drop down menu: Options set via custom calculation, resets to default (top) selection

[ZacS_LW]

I've created a form we use for employee provisioning for multiple companies and have created a dropdown that is using a custom calculation to set the options based on the company name that is entered to for the list of available branches. When entering the company name the drop down changes as expected, setting the "please select" option as the selected option (first open defaults). After selecting an option from the menu and clicking into any other fields, the drop down reverts back to the original "please select" value. Script below. I tried setting it up as a switch/case script as well with the same results. Any advice on a better way to generate this list and prevent it from reverting to the top option in the list would be greatly appreciated!

var coBranchOpts = this.getField("Company").valueAsString;
if (coBranchOpts=="Company1")
{
event.setItems([
"Please Select a branch from the options below",
"Address 1",
"Address 2",
"Address 3",
"Other - Please add comments in the 'Special Instructions' field"
]);
}
else if (coBranchOpts=="Company2")
{
event.setItems([
"Please Select a branch from the options below",
"Address 1",
"Address 2",
"Address 3",
"Other - Please add comments in the 'Special Instructions' field"
]);
}
else if (coBranchOpts=="Company3")
{
event.setItems([
"Please Select a branch from the options below",
"Address 1",
"Address 2",
"Address 3",
"Other - Please add comments in the 'Special Instructions' field"
]);
}
else if (coBranchOpts=="First Excel Title, LLC")
{
event.setItems([
"Please Select a branch from the options below",
"Address 1",
"Address 2",
"Address 3",
"Other - Please add comments in the 'Special Instructions' field"
]);
}
else if (coBranchOpts=="Enter Company Name")
{
event.setItems(["Please select the company first"]);
}
else
{
event.setItems(["Company not found - Please add comments in the 'Special Instructions' field"]);
}

[try67]

Move the code to the field's Validation event and change the first line to:

var coBranchOpts = event.value;

[ZacS_LW]

That got it! When I was testing and moved the script from the branch calculation to the company validation I forgot to change the first line. You're my rockstar today :D.