Office 365 MailUser Creation Error

Hi Expers

I have developed the wcf web service for creating the user mailboxes and mail users in office 365. This web service deployed in IIS 7.5 in Windows 7.

I was not able to create the Mail Users using the Web Service and Its throwing Exception while creating the mail users.

Web Service Code to Create The Mail Users

Command command= new Command();

RunspaceInvoke rsi = new RunspaceInvoke();

System.Security.SecureString sBlock = (System.Security.SecureString)rsi.Invoke("(ConvertTo-SecureString -String 'Pa$$word1' -AsPlainText -Force)")[0].BaseObject;

command.Parameters.Add("Password",sBlock );

command.Parameters.Add("MicrosoftOnlineServicesID","abc@abcoffice365-dev.com"); 

command.Parameters.Add("Name","abc123");

PowerSehll ps= PowerShell.CreatePowerShell();

ps.Commands.AddCommand(command);

ps.invoke();

Exception Details

processPowerShell Remote Parameter set cannot be resolved using the specified named parameters.

System.Management.Automation.RemoteException: Parameter set cannot be resolved using the specified named parameters.
   at System.Management.Automation.PowerShell.CoreInvoke[TOutput](IEnumerable input, PSDataCollection`1 output, PSInvocationSettings settings)
   at System.Management.Automation.PowerShell.Invoke(IEnumerable input, PSInvocationSettings settings)
   at System.Management.Automation.PowerShell.Invoke()

   at LiveConnector.liveedu.LCSCommon.processPowerShell(ICollection`1 processCommands, LCSOperationStatus status)

Help is greatly appreciated.

Thanks

Ameer Basha