Get Id from Lookup by Name (Creatio)

var esq = Ext.create("Terrasoft.EntitySchemaQuery", {
    rootSchemaName: "ContactType"
});

esq.addColumn("Id");
esq.filters.addItem(esq.createColumnFilterWithParameter(Terrasoft.ComparisonType.EQUAL, "Name", "Customer"));

esq.getEntityCollection(function(result) {
    if (result.success) {
        var item = result.collection.first();
        var id = item.values.Id;
        console.log("The Id for Customer on ContactType is " + id);
    }
}, this);