Xailer & OZ Software

When I try to save an array to aItems of a combobox control using this:
// look up codes for DMO's filtered by county civil module
::oDbfDataSetDMOCodes:Filter("CADOCUMT->MODULE == 'CCIVIL '")
oSender:aItems := ::oDbfDataSetDMOCodes:SaveToArray(
{"DOCUCODE","DOCUDESC"} )
oSender:aItemsBound := ::oDbfDataSetDMOCodes:SaveToArray(
{"DOCUCODE","DOCUDESC"} )
I get this error:
Subsystem Call: BASE
System Code: 1101
Default Status: .F.
Description: Argument error
Operation: LTRIM
Arguments: [ 1] = Type: A Val:
Involved File:
Dos Error Code: 0
I have the nDataType of the control set to dtBOUND and the nStyle set to
cDROPDOWNLIST. The combobox works with a single value, but not with the
above array. What am I doing wrong?
TIA,
Gary