How can we access the database-enumeration values using javascript?

I have some database-enumerations which I'm trying to set their values automatically based on other attribute or enumerations values. The problem is that the enumeration is stored in the database and I can't retrieve or set the values.

Below is a script that gets the selected value from one database-enumeration and return a specific value that should be set into another database-enumeration, but it's not working. Not sure if I should use another way to work with the database-enumerations.

dojo.provide("com.example.GrowthPlatformContractOwnershipAutoPopulationFromServiceLineContractOwnership");
dojo.require("com.ibm.team.workitem.api.common.WorkItemAttributes");

(function() {
    dojo.declare("com.example.GrowthPlatformContractOwnershipAutoPopulationFromServiceLineContractOwnership", null, {
    getValue: function(attributeId, workItem, configuration) {

try {
var serviceLineContractOwnership = workItem.getLabel("ContractOwnership_List");
switch (serviceLineContractOwnership) {
case "ADM Innovation":
return "CAI";
break;
default:
return "Please Select";
}
}
catch(err) {
            var txt;
            txt="There was an error on this page.\n\n";
            txt+="Error description: " + err.message + "\n\n";
            txt+="Click OK to continue.\n\n";
            alert(txt);
        }
    }
    });
})();