This code works for me on Oracle.

SqlExec(h,"select * from fo_s where objed=.."),"fo_s")
sele fo_s
=CursorSetProp("SendUpdates",.t.)
=CursorSetProp("Tables","fo_s")
=CursorSetProp("KeyFieldList","objed")
=CursorSetProp("WhereType",1)
=CursorSetProp("UpdatableFieldList","objed,smlouva,FoVidetSml,CasZnak,NidZnak")
=CursorSetProp("UpdateNameList","objed fo_s.objed, smlouva fo_s.smlouva, FoVidetSml fo_s.FoVidetSml, casznak fo_s.casznak, nidznak fo_s.nidznak")

Pavel