hashmap - Java - Getting a list of contacts using Infusionsofts API -

i'm using java , infusionsofts api list of contacts based on customer id. can't figure out way this. i'm using googles guava use multimap it's producing error:

org.apache.xmlrpc.common.xmlrpcextensionexception: serializable objects aren't supported, if isenabledforextensions() == false

i'm trying hashmap , i'm inserting "id" key , customer id value there's 1 entry in hashmap.

how can add parameters variable map contains:
["id",11111]
["id",22322]
["id",44444]

    list parameters = new arraylist();     parameters.add(app_id);     parameters.add(table_name);      parameters.add(limit);     parameters.add(pagenumber);      hashmap<string, integer> map = new hashmap<string, integer>();     for(int customerid : customerids){         map.put("id", customerid);     }     //problem here     parameters.add(map);     //this problem, need add ["id", customerid] multiple     //times customerid being different since there's hashmap     //there's 1 entry in map       string[] fields = {"email","firstname"};     parameters.add(fields);       object[] contacts = null;     try{         contacts = ( object [] ) client.execute("dataservice.query",parameters);     }catch(xmlrpcexception e){         e.printstacktrace();     }      (int = 0; < contacts.length; i++) {         map contact = (map) contacts[i];         system.out.println(contact+"\n\n");     }