> Ibo 4.2Fp

Marco, I have not tried to interpret everything you posted, simply the
fact that your are using 4.2.Fp and have trouble with CalculateFields.

Did you catch my earlier post about a bug in the KeyToChildAction
method (IBA_Dataset.IMP file)...

procedure TIB_Dataset.KeyToChildAction( AAction: TIB_KeyChildAction;
Info: longint );
<...>
ADataset.Prepare;
//TIB_Row( Info ).Values[ tmpVals ] :=
// TIB_BDataset( ADataset ).Lookup(
// tmpKeyVals,
// TIB_Row( Info ).Values[ tmpKeyFlds ], tmpFlds );
TIB_Row( Info ).Values[ tmpVals ] :=
TIB_BDataset( ADataset ).Lookup(
tmpKeyFlds,
TIB_Row( Info ).Values[ tmpKeyVals ], tmpFlds );
<...>
end;

The commented out code is what was there, below it is the replacement
that gets the locate parameters in the correct order.

--
Geoff Worboys - TeamIBO
Telesis Computing