735 ILCS 5/12-719 — Transfer of interest by heir or legatee

No assignment, transfer or other disposition by an heir or distributee of his or her interest in the possession of an administrator or executor shall defeat the garnishment, unless (1) prior to the service of garnishment summons upon the administrator or executor, the transfer or other disposition is reduced to writing and (2) the writing is filed in the office of the clerk of the court appointing the executor or administrator.