IsUserMemberOfGroup(GroupName, [UserName])

This method checks if a user belongs to a certain group. It contains the following parameters:

•GroupName: Name of a user group to check

•UserName: Name of a user to check. If this parameter is omitted or is an empty String, this method considers the user returned by the E3GetActor method

This method returns True if a user belongs to the GroupName group or False otherwise.