BAPI Help - BAPI_REL_GETRELATIONS

Hi All,

I really am in need of some help with this BAPI.

This is my code

data: objectid type bapiborid.

  objectid-objkey  = material.
  objectid-objtype = 'BUS1080'.

  if sy-mandt = '260'.
    objectid-logsys  = 'IRDCLNT260'.
  elseif sy-mandt = '220'.
    objectid-logsys  = 'IRDCLNT220'.
  endif.

call function 'BAPI_REL_GETRELATIONS'
  exporting
    objectid              = objectid
*   ROLE                  =
*   RELATION              =
*   RECURSIONLEVEL        = 1
  IMPORTING
    RETURN                = RETURN4
 tables
   listofrelations       = list_of_relations.

However it is not returning anything at all and also there is no information in the return paramater! I am sure I am passing the correct parameters to the BAPI but to no avail. What I am trying to do is get all the object links (or relations) held against this object (Material) ... Any ideas??