Kaseya script to silently uninstall Microsoft Security Essentials

Microsoft security essentials is a good anti-virus program for small businesses because it is a capable program and its End User License Agreement (EULA) allows its use for free where the business has less than 10 PCs.  However, if you are a managed server provider like The PC Support Group then you may well be using software like Kaseya with its automated scripting engine for preventative maintenance routines and its 24/7 monitoring and alerting features.  A new customer would typically take the Kaseya Endpoint Security (KES) thus allowing an integrated management service.  So using Kaseya, how do you uninstall Microsoft Security Essentials prior to installing KES? With a script of course (this script was taken courtesy of SMason on the Kaseya Forums):

Script Name: Uninstall Security Essentials
Script Description: 

IF True 
THEN
   Execute File - (Continue on Fail)
     Parameter 1 : %PROGRAMFILES%\Microsoft Security Client\setup.exe
     Parameter 2 : /x /s
     Parameter 3 : 3
         OS Type : 13
   Execute File - (Continue on Fail)
     Parameter 1 : %ProgramW6432%\Microsoft Security Client\setup.exe
     Parameter 2 : /x /s
     Parameter 3 : 3
         OS Type : 13
   Execute File - (Continue on Fail)
     Parameter 1 : %PROGRAMFILES%\Microsoft Security Essentials\setup.exe
     Parameter 2 : /x /s
     Parameter 3 : 3
         OS Type : 13
   Execute File - (Continue on Fail)
     Parameter 1 : %ProgramW6432%\\Microsoft Security Essentials\setup.exe
     Parameter 2 : /x /s
     Parameter 3 : 3
         OS Type : 13
ELSE