Cloning Roles from one vCenter to another

Hi Guys,

I need some help regarding a workflow I want to build for our VMware administators to ease there management. But I'm stucked and do not know how to proceed. Maybe somebody can help me.

I have the following step inside my workflow:

//Roles of Source vCenter
var SourceRoleList = new Array();
var SourceRoleList = Source_vcenter.authorizationManager.roleList
var InfraSourceRoleList = new Array();

for each (Role in SourceRoleList)
{
if (Role.name.indexOf("Infra") != -1 )
{
  InfraSourceRoleList.push(Role);
}
}
//Roles of Target vCenter
var TargetRoleList = new Array();
var TargetRoleList = Target_vcenter.authorizationManager.roleList;
var PreExisting = 0;

for each(Role in InfraSourceRoleList)
{
PreExisting = 0
for each(TargetRole in TargetRoleList)
  {
  if(TargetRole.name == Role.name)
   {
   PreExisting = 1  
   }
  }
if(PreExisting == 1)
  {
  try
   {
   Target_vcenter.authorizationManager.updateAuthorizationRole(Role.roleId , Role.name , Role.privilege);
   System.log("Role: " + Role.name + " --- Privileges updated");
   }
  catch(ex)
   {
   //System.log(ex);
   System.log("Role: " + Role.name + " --- already exists - No Updates");
   ex = null;
   }
  }
else
  {
  try
   {
   Target_vcenter.authorizationManager.addAuthorizationRole(Role.name , Role.privilege);
   System.log("Role: " + Role.name + " --- created with privileges");
   }
  catch(ex)
   {
   Target_vcenter.authorizationManager.addAuthorizationRole(Role.name);
   System.log("Role: " + Role.name + " --- created");
   }
  }
}

If the role is not existing in target vcenter every pivilege will copied correctly. If I try to update it fails.But when I read the descriptin of authorizationManager.updateAuthorizationRole for e it seems the right function to use.