Setting member preference without updating configuration

The API online mention 2 Parameters

set_connection_limit:

Parameter Type

pool_names String[]

limits MemberConnectionLimit [] []

first parameter is my pool

the second is an array of array with a struct that describes a member connection limit.

my member with IP and PORT

and the connection limit

  
  // Member with IP and port  
  @memb =   
  (    
  'address' => '192.168.11.168',    
  'port'=>0,    
  );

  
  // Member with connection limit  
  @memberlimit=   
    (    
  @memb,    
  'connection_limit' => 500,    
    );