Hi Neil,
To set the RowSource the array must be public or if You use the mover in form You can define a form property as array an the use it as a rowsource

SELECT * ;
FROM ("U:\Data\modacad.dbf") ;
WHERE &lcdesign ;
order BY mainkey ;
INTO array thisform.crssearch

WITH main.oMover.lstleft
 .RowSourcetype = 5
 .Rowsource = "thisform.crssearch"
 .ColumnCount = 1
 .Requery()
ENDWITH

HTH
Boris