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  Def_List Name(#Employees) Fields(#Empno #Surname #Givename #Empthm …) Type(*working)

  Mthroutine Name(Load)    

    * Define the service instance and execute asynchronously
    Define_Com Class(#ServerModule.GetEmployees) Name(#GetEmployees)

    #GetEmployees.ExecuteAsync( #Employees )    

    * When the server returns  
    Evtroutine Handling(#GetEmployees.Completed)

      * Load the list data
      Selectlist Named(#Employees)       
        Add_Entry To_List(#List)     
      Endselect
    Endroutine   

    * If the server call failed
    Evtroutine Handling(#GetEmployees.Failed)      

      * Error handling    

      Endroutine

  Endroutine

For more information on calls to Server Modules refer to Asynchronous vs Synchronous Database Access.