ExecuteSheetOperation Error(C# COM intetface)

Hello EBDN community,

C# COM intetface Error.

I tried to run this Code, but always Error. The error is "Parameter is not valid，(From HRESULT:0x80070057(E INVALIDARG)
-2147024809"

Thanks!

            // C# COM intetface Error.

            // ref  Interop.Aucotec.dll

            // using Aucotec;



            AucExecuteSheetOperationRecord[] atParamData = new AucExecuteSheetOperationRecord[9];



            atParamData[0].qual = (int)AucExecuteSheetModes.aucOpExecSheetGetSymbol;



            atParamData[1].qual = (int)AucExecuteSheetModes.aucArgExecSheetRef2Symbol;

            atParamData[1].val = symbolId;



            atParamData[2].qual = (int)AucExecuteSheetModes.aucArgExecSheetFctSel;

            atParamData[2].val = 0;



            atParamData[3].qual = (int)AucExecuteSheetModes.aucArgExecSheetRetVal;//return value: symbol position left top (X)

            atParamData[4].qual = (int)AucExecuteSheetModes.aucArgExecSheetRetVal;//return value: symbol position left top (Y)

            atParamData[5].qual = (int)AucExecuteSheetModes.aucArgExecSheetRetVal;//return value: symbol position right bottom (X)

            atParamData[6].qual = (int)AucExecuteSheetModes.aucArgExecSheetRetVal;//return value: symbol position right bottom (Y)

            atParamData[7].qual = (int)AucExecuteSheetModes.aucArgExecSheetRetVal;//return value: pin count

            atParamData[8].qual = (int)AucExecuteSheetModes.aucArgExecSheetRetVal;//return value: array with pin information



            try

            {

                Array myArr = atParamData as Array;

                sheet.ExecuteSheetOperation(ref myArr);

            }

            catch (Exception ex)

            {

                //Forms.MessageBox.Show("ExecuteSheetOperation Error:" + ex.Message);

                return null;

            }