Getting Custom Field Lookup Value Using JSOM Project Server 2013

Hi,

I am having a heck of a time trying to get custom field lookup values using JSOM. I am able to get the entry id for the custom field value but when I try to call ltEntries.getById(entryId) or ltEntries.getByGuid(entryId) an empty object is returned.

The LookupEntryCollection (ltEntries in my case) has all of the entries for the lookuptable and I am able to pull the each entry by calling ltEntries.getItemAtIndex() but I am not able to use getByGuid or getById. 

Does anyone have any experience with pulling lookup values by ID with JSOM? If so, what am I doing wrong in the code below?

 // Declare a variable to store the published projects that exist
    // in the current context.
    var projects;
    var projContext;
    var customFields;
    var customFieldData = [];

    // Ensure that the PS.js file is loaded before your custom code runs.
    SP.SOD.executeOrDelayUntilScriptLoaded(GetProjects, "PS.js");

    // Get the projects collection.
    function GetProjects() {

        // Initialize the current client context.
        var projContext = PS.ProjectContext.get_current();

        // Get the projects collection.
        projects = projContext.get_projects();

        lookupTables = projContext.get_lookupTables();


        // Register the request that you want to run on the server.
        // This call includes an optional "Include" parameter to request only the
        // Name, CreatedDate, and Id properties of the projects in the collection.
        projContext.load(projects, 'Include(Name, CreatedDate, Id, CustomFields, IncludeCustomFields, FieldValues)');
        projContext.load(lookupTables);
        // Run the request on the server.
        projContext.executeQueryAsync(onQuerySucceeded, onQueryFailed);


    }
    function onQuerySucceeded(sender, args) {

        projContext = PS.ProjectContext.get_current();
        var lookupTable = lookupTables.getByGuid('16216553-dbea-4770-b7cd-5f565ebea160');
        var ltEntries = lookupTable.get_entries();

        projContext.load(ltEntries);
        //'Include(FullValue)'
        projContext.executeQueryAsync(function () {

            var lookupEnumerator = ltEntries.getEnumerator();
            while (lookupEnumerator.moveNext())
            {
                var entry = lookupEnumerator.get_current();
                projContext = PS.ProjectContext.get_current();

                projContext.load(entry, "FullValue")
            }
            projContext.executeQueryAsync(function () {

        // Get the enumerator and iterate through the collection.
        var projectEnumerator = projects.getEnumerator();
        while (projectEnumerator.moveNext()) {

            var project = projectEnumerator.get_current();

            businessOrgFld = project.get_customFields().getByGuid("a2a72e91-2760-42b7-b20a-0f44f610d6c3");

            // Create the row for the project's information.
            var row = tblProjects.insertRow();

            row.insertCell().innerText = project.get_name();
            row.insertCell().innerText = project.get_createdDate();
            row.insertCell().innerText = project.get_id();

            var fieldValues = project.get_includeCustomFields().get_fieldValues();
            var enumerator = project.get_customFields().getEnumerator();
            while (enumerator.moveNext()) {
                var customField = enumerator.get_current();
                if (customField.get_name() == "Business Organization") {
                    var entryId = fieldValues[customField.get_internalName()];
                    var lookupEntry = ltEntries.getById(entryId);
                    row.insertCell().innerText = lookupEntry.get_fullValue();
                }
            }
        }
            } , onQueryFailed);
        }, onQueryFailed);
    }
    function onQueryFailed(sender, args) {
        $get("spanMessage").innerText = 'Request failed: ' + args.get_message();
    }