if isObjectInACLGroup ( "user." .. accountName, aclGetGroup ( "Admin, Moderator" ) 
  
 
"Admin, Moderator" will be taken as 1 group 
so 
split them out 
  
if isObjectInACLGroup ( "user." .. accountName, aclGetGroup( "Admin") or isObjectInACLGroup ( "user." .. accountName, aclGetGroup( "Moderator") 
  
 
hope this helps