Get Worker Dept from Worker in ax 2012

// Get Worker Dept from Worker in ax 

display Name WorkerDepartmentName()
{
    HcmWorker               hcmWorker;
    str                     deptName;

    select RecId from hcmWorker
            where hcmWorker.RecId == this.UpdatedByWorker;

     deptName = hcmWorker.primaryDepartmentName();

    return deptName;

}