How to resolve DynamicHeight problem in Morphx report[X++]

For set dynamic height for controls in report

on executeSection method:

method 01

    real                        maxHeight;
    str                         maxStrValue = this.maxStrControlName();
    ReportStringControl         maxStrControl = element.design().controlName("maxStrControlName");
;
    maxHeight= maxStrControl.heightOfWordWrappedString100mm(maxStrValue);

    if (maxHeight!= maxStrControl.height100mm())
    {
        maxStrControl.height100mm(maxHeight);
    }

or same in char:

method 02

    int    maxHeightChar;
;  

    maxHeightChar = maxStrControl.widthOfString100mm(maxStrValue) / maxStrControl.width100mm() + 1;     

    maxStrControl.height(maxHeightChar , Units::CHAR);

for example

public void executeSection()
{
    //CUS Changed on 09 Oct 2013 at 12:28:55 by Jimmy Xie TECTURA LL000260 Begin
    ReportStringControl maxStrControl = element.design().controlName("commodityNo");
    str                 maxStrValue = this.commodityNo();
    int                 maxHeight = maxStrControl.widthOfString100mm(maxStrValue) / maxStrControl.width100mm() + 2;
;
    /* method 1
    maxHeight = maxStrControl.heightOfWordWrappedString100mm(maxStrValue);
    if (maxHeight != maxStrControl.height100mm())
        maxStrControl.height100mm(maxHeight);
    */

    //commodityNo.height(maxHeight, Units::char);
    // method 2
    LineNumStr.height(maxHeight, Units::char);
    ItemName.height(maxHeight, Units::char);
    QtyStr.height(maxHeight, Units::char);
    SalesPriceStr.height(maxHeight, Units::char);
    netSalesPriceStr.height(maxHeight, Units::char);
    amountStr.height(maxHeight, Units::char);
    //CUS Changed on 09 Oct 2013 at 12:28:55 by Jimmy Xie TECTURA LL000260 End

    serialNumber++;
    super();
    totalTaxValue  += CustInvoiceTrans.lineAmountInclTax();//TaxAmount;
    totalQty       += CustInvoiceTrans.Qty;
}