Passing a string value from C# to VBA Macro

Hello everyone

I have a VBA Macro (xlsm Format) which contains 2 functions (one for Copying  the cells data of one sheet to another sheet  and the other function should save the sheet that has been copied ).
So I'm running the VBA macro from C# (Microsoft visual Studio 2010) against a xlsx report and I'm trying to pass a string  from C# to the both functions Copy and Save which are within the VBA Macro like this:

//The function which should  run the macro in C#
 public void RunMacro(object oApp, object[] oRunArgs)
        {
            oApp.GetType().InvokeMember("Run", System.Reflection.BindingFlags.Default | System.Reflection.BindingFlags.InvokeMethod,
             null, oApp, oRunArgs);       
        }
// The part of the code where the macro is runned in C#
        #region Run Makro automatically
                try
                {
                  string  temporaryPath = "D:\TEMPs\" ,                 
                   reportName = "Testreport.xlsx";
                   string macroName = "Testmakro.xlsm";

                    // Object for missing (or optional) arguments.
                    object oMissing = System.Reflection.Missing.Value;

                    // Create an instance of Microsoft Excel
                    Excel.ApplicationClass oExcel = new Excel.ApplicationClass();
                     
                    // Make it visible
                    oExcel.Visible = true;
                    oExcel.ScreenUpdating = false;
                    bool reportExist = Directory.EnumerateFiles(temporaryPath + "\\", reportName).Any();

                    if (reportExist == true)
                    {

                        // Open Worksheet01.xlsm
                        Excel.Workbooks oBooks = oExcel.Workbooks;
                        Excel._Workbook oBook = null;

                        oExcel.DisplayAlerts = false;

                        oBook = oBooks.Open( temporaryPath + "\\" + macroName, oMissing, oMissing,
                            oMissing, oMissing, oMissing, oMissing, oMissing, oMissing,
                            oMissing, oMissing, oMissing, oMissing, oMissing, oMissing);
              
                        //Run the Macro 
                        //RunMacro(oExcel, new Object[] { macroName, temporaryPath });
                    }
                    else
                    {
                        string Failure = "XXXXXX ";
                        Err01.ErrorLog(pathOutput, Failure);
                    }
                }
                catch
                {
                    string Failure1 = "Failure by running the macro! \n ";
                    GlobalVar.Err01.ErrorLog(pfadOutput, Failure1);
                }
// the Function Copy() and Save() in the VBA macro 
Sub Copy(temporaryPath As String)
Dim strFile As String
Dim fileNAME As String
fileNAME = "Testreport.xlsx"
'Do some stuff
'strFile = Environ("MAKROPATH") & fileNAME 
strFile = temporaryPath & fileNAME 
//Do some stuff
End Sub

Sub Save (temporaryPath As String)
 Dim FPath As String
Dim FName As String
FPath = temporaryPath
FName = "Success.xlsx"
//Do some stuff
 Application.ActiveWorkbook.SaveAs Filename:=FPath & FName, FileFormat:=51, AccessMode:=xlNoChange
//Do some stuff
End Sub

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The issues I'm facing is that the parameter temporaryPath that I'm passing to the run function in C# won't be transferred to the functions Copy and Save within the macro!
The approach with Environ("MACROPATH") works just great but I have been told not to use  environment variables.
How Can I pass the string value to the run function in C# so that it will be used in the Copy and save functions within the VBA macro?

Thank you