Subform update issue

Hi everyone,

I am trying to transform a Matrix Form into two forms: a main form with a subform control and a subform with a tab box control to replace the matrix...

The original matrix form has in its header 4 text fields that represent the four filters controlling the data displayed in the matrix...
For each of these fields, the following function EditFilters() is called on the OnAfterValidate trigger of the control:

RESET;
IF Filtre1<>'' THEN
  BEGIN
   IF TypeA=0 THEN SETRANGE("A",Filtre1)
    ELSE BEGIN

           Nvl.RESET;
           Nvl.SETRANGE("Cnl",Filtre1);
           Nvl.FIND('-');

           SETFILTER(NumLi,'%1..%2',Nvl.NumL,(Nvl.NumL+POWER(100,Nvl."Type")-1));
           SETFILTER("A",'<>%1','');
     END;
   END;

IF Filtre2<>'' THEN SETRANGE("E.Code",Filtre2);

IF Filtre3<>0
THEN
SETRANGE("R",Filtre3-1);

IF Filtre4<>'' THEN SETRANGE("M.",Filtre4);

CurrForm.UPDATE(FALSE);

I tried to examine the code of some standard forms that did the same transformation as the one I am trying to do...

I wrote the following function, UpdateMatrixSubform() update the subform:

CurrForm.MatrixForm.FORM.Load(Filtre1,Filtre2
,Filtre3,Filtre4,MatrixColumnCaptions,MatrixRecords,CurrSetLength);

Here is the code of the Load() Function:

Filtre1 := Filtre1_1;
Filtre2 := Filtre2_1;
Filtre3 := Filtre3_1;
Filtre4 := Filtre4_1;

COPYARRAY(MATRIX_ColumnCaption,MatrixColumns1,1);
FOR i := 1 TO ARRAYLEN (MatrixRecords) DO
MatrixRecords[i].COPY(MatrixRecords1[i]);
MATRIX_NoOfMatrixColumns := NoOfMatrixColumns1;

I am calling the function UpdateMatrixSubform() in the trigger OnAfterValidate, after the call of the function EditFilters().

The problem is that the subform does not update, it does not respond when I modify the filters, the data remains the same...

What should I do???