Using Datmodules in COM+ environment - urgent please

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I made an COM+ application using Delphi 5 (STA, synchronisation=Required)
I included Datamodules (not TMTSDataModule), because I have to use some containers for non-visual cmponents - set in design time).

When only one user uses this component, all works fine. but when 2 or more users access component at the same time, something strange happens. It looks like datamodules are not created like they should. Is there a problem of creating objects from "dfm" or is something else?

calling method looks like:

procedure TproTiskEtk.InterpretePage(const ObjID, UserID,
TermID: WideString; Key, Param: Word; var VarTermPage,
VarContainer: OleVariant; var Errcode: Smallint; var ErrMsg: WideString);
begin
try
Dm01X1:=TDm01X1.Create(nil);
Dm01X1.CanInit:=True;

dm01A:=Tdm01A.Create(nil);

Dm01X1.Rtisk := CreateInstance(CLASS_SysPar) as Idispatch;
Dm01X1.RImage := CreateInstance(CLASS_ObjART) as Idispatch;
// Dm01X1.Oart := CreateInstance(CLASS_ObjART) as Idispatch;

Dm01X1.RFTermClient.ObjectPointer := Self;

Dm01X1.RFTermClient.CallClient(ObjId,UserID, TermID, Key, Param, VarTermPage, VarContainer, ErrCode, ErrMsg);
except
FreeAndNil(dm01A);
FreeAndNil(Dm01X1);
SetAbort;
end;
FreeAndNil(dm01A);
FreeAndNil(Dm01X1);
SetComplete;
end;