Not sure how your response looks like, but if node Employee is a child to node VacReqSet, then simply use
title="{Employee/Ename}"
(without the preceding slash for Employee, since you want the Employee relative to VacReqSet)
Not sure how your response looks like, but if node Employee is a child to node VacReqSet, then simply use
title="{Employee/Ename}"
(without the preceding slash for Employee, since you want the Employee relative to VacReqSet)