Set assembly permissions

[Bassem]

Hi,

I've create an assembly loaded it to SQL Server and run a sql command that uses it. Everything worked fine till I added this code to the assembly:

try 
            {
                Process sapProcess = new Process();
                sapProcess.StartInfo = new ProcessStartInfo(ConfigurationHelper.IncomingDirectory + "\\" + "SAP.exe");
                sapProcess.StartInfo.Arguments = ConfigurationHelper.ProcessingDirectory + "\\" + xmlFileName;
                sapProcess.Start();
            }
            catch (Exception callSAPException)
            {
                error += callSAPException.Message;            
            }

An error occurred in SQL Server:

A .NET Framework error occurred during execution of user-defined routine or aggregate "dcm_sp_generateresultxml": 
System.Security.SecurityException: Request failed.
System.Security.SecurityException: 
   at SQLCLRIO.Generate(String xmlFileName)

I'm trying to set the permission to the assembly so SQL Server can use it and run an exe application, but I don't know how! I searched and some techniques comes up, unfortunately no one worked.

Thanks in advanced!