[AX 2012] Hide Cancel Button on Dialog

void showTotals()
{
    Dialog          dlg = new Dialog("Totals");
    DialogField     rfpAmount;
    DialogField     settlAmount;
    DialogField     totalAmount;
    formBuildCommandButtonControl   cancelButton;
    ;

    rfpAmount = dlg.addFieldValue(extendedTypeStr(Amount), MIORFPTable.TotalReqAmt, "Cash Advance", "Cash Advance");
    rfpAmount.active(false);
    settlAmount = dlg.addFieldValue(extendedTypeStr(Amount), MIORFPSettlementTable.TotalSetAmt, "Actual", "Actual");
    settlAmount.active(false);
    totalAmount = dlg.addFieldValue(extendedTypeStr(Amount), MIORFPTable.TotalReqAmt - MIORFPSettlementTable.TotalSetAmt, "Settle", "Settle");
    totalAmount.active(false);

    dlg.defaultButton(DialogDefaultButton::Ok);
    dlg.alwaysOnTop(true);
    dlg.dialogForm().form().design().left(48, 4);
    dlg.dialogForm().form().design().top(240, 3);

    cancelButton = dlg.dialogForm().control("cancelButton");
    cancelButton.visible(false);

    dlg.run();
}