Excuting Matlab code inside SQL Server 2008 R2

I want to run matlab code using a User-defined function in SQL Server 2008 R2 (Express edition - 64bits). I do not know if this is possible...

I Execute the following script to be able to load the MWArray.dll assembly onto the SQL Server instance.

ALTER DATABASE [TEST_MATLAB] SET TRUSTWORTHY ON;

CREATE ASSEMBLY [system.drawing]
  FROM 'C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Drawing.dll'
  WITH PERMISSION_SET = UNSAFE;

CREATE ASSEMBLY [MWArray] 
from 'C:\Program Files\MATLAB\MATLAB Compiler Runtime\v80\toolbox\dotnetbuilder\bin\win64\v2.0\MWArray.dll'
WITH PERMISSION_SET = UNSAFE;

This works well.

I then create in Visual Studio 2010 a "Visual C# SQL CLR Database Project" to define a user-defined function. Here is the code of the (test) function:

using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;
using MathWorks.MATLAB.NET.Arrays;

public partial class UserDefinedFunctions
{
    [Microsoft.SqlServer.Server.SqlFunction]
    public static SqlString Function1()
    {
        MWNumericArray a = new MWNumericArray(56);
        return new SqlString(a[1].ToString());
        //return new SqlString("Hello");
    }
};

I then deployed the SQL CLR project using VS2010 "deploy" functionality. This loads the project's assembly in the database.

When I tried to execute the function on the SQL Server database using

SELECT dbo.Function1()

I get the error:

Msg 6522, Level 16, State 2, Line 1
A .NET Framework error occurred during execution of user-defined routine or aggregate "Function1": 
System.TypeInitializationException: Une exception a été levée par l'initialiseur de type pour 'MathWorks.MATLAB.NET.Arrays.MWNumericArray'. ---> System.TypeInitializationException: Une exception a été levée par l'initialiseur de type pour 'MathWorks.MATLAB.NET.Arrays.MWArray'. ---> System.TypeInitializationException: Une exception a été levée par l'initialiseur de type pour 'MathWorks.MATLAB.NET.Utility.MWMCR'. ---> System.BadImageFormatException: Tentative de chargement d’un programme de format incorrect. (Exception de HRESULT : 0x8007000B)
System.BadImageFormatException: 
   à MathWorks.MATLAB.NET.Utility.MWMCR.mclmcrInitialize2(Int32 primaryMode)
   à MathWorks.MATLAB.NET.Utility.MWMCR..cctor()
System.TypeInitializationException: 
   à MathWorks.MATLAB.NET.Arrays.MWArray..cctor()
System.TypeInitializationException: 
   à MathWorks.MATLAB.NET.Arrays.MWNumericArray.get__Inf()
   à MathWorks.MATLAB.NET.Arrays.MWNumericArray..cctor()
System.TypeInitializationException: 
   à MathWorks.MATLAB.NET.Arrays.MWNumericArray..ctor(Int32 scalar)
   à UserDefinedFunctions.Function1()

What could cause this error ? I tried to compile the SQL CLR project using .NET 3.5 and targetting "Any CPU" or "x64". Notice that If I load the 32-bit version of MWArray.dll in the database. It gives the following errors when I "deploy" the project from VS2010 (i.e. when I load the project's DLL on the database):

   Creating [SqlServerProjec2]...
  C:\MatlabCode\TESTSQLCLR\ConsoleApplication1\SqlServerProjec2\bin\Debug\SqlServerProjec2.sql(37-37): Deploy error SQL01268: .Net SqlClient Data Provider: Msg 6503, Level 16, State 12, Line 1 Assembly 'mwarray, version=2.12.1.0, culture=neutral, publickeytoken=e1d84a0da19db86f.' was not found in the SQL catalog.
    An error occurred while the batch was being executed.

It seems like it does not recognize the 32-bit MWArray.dll ...

Thanks for you help!