Problem with Script Functoid in Biztalk map

Hi all,

    I am having trouble when testing a map in Biztalk, it gives me an error message pointing to an external C# assembly calling a public static method in a class:

XSL transform error: Function ‘ScriptNS0:PadString()’ has failed. Cannot widen from target type to primitive type.

The code for the method is the following:

namespace BMCHP.Objects
{
…

  public static string PadString(string strInput, int lenField, bool bDirection, string strPadIndicator)
  {
   int strLen = strInput.Length;
   string strRet;
   char chrPad;
   try
   {
    if (lenField > strLen)
    {
     if (strPadIndicator == “zero”)
     {
      chrPad = ‘0’;
     }
     else
     {
      chrPad = ‘ ‘;
     }
     if (bDirection)
     {
      strRet = strInput.PadLeft(lenField – strLen, chrPad);
     }
     else
     {
      strRet = strInput.PadRight(lenField – strLen, chrPad);
     }
    }
    else
     strRet = strInput;
   }
   catch (ArgumentException e)
   {
    Console.WriteLine(“Argument exception in PadString function: ” + e.Message);
    return “”;
   }
   return strRet;
  }
…
}

I configured the functoid inputs with the following parameters (in order) to match the sequence of parameters passed to the C# method:

– Scripting functoid (conversion function that takes an integer and converts it to a string; the input is an iteration functoid and the output is linked to this functoid)

– Constant value of “7”

– Output of an “Equal” logical functoid (that compares two identical values)

– Constant value of “zero”

As far as the C# assembly goes, after compiling it in its own project, I referenced it in my Biztalk project, and installed the DLL in the GAC, using the gacutil program for .NET 1.1 framework.

Btw, I should also mention that I have both .NET 1.1 and 2.0 frameworks installed on the same workstation (Windows XP Professional 2003), and the C# assembly was built using VS 2003 (.NET 1.1).