Vlocity - Populating Type a head block values from Remote Class

Below is the remote class,

global with sharing class TypeBlockMemberNameFilter implements vlocity_ins.VlocityOpenInterface {

   public Boolean invokeMethod(String methodName, Map<String, Object> input, Map<String, Object> outMap, Map<String, Object> options)

   {

       System.debug('input :'+input);

       List<Map<String,String>> lookupoptions=new List<Map<String,String>>();

       Map<String,Object> step=(Map<String,Object>)input.get('Create Group Step');

       Map<String,Object> memblock=(Map<String,Object>)step.get('MemberName1-Block');

       String filter=memblock.get('MemberName1')+'%';

       System.debug('filter :'+filter);

       Map<String,String> dupcheckMap=new Map<String,String>();

       for(vlocity_ins__Party__c p:[Select Id,vlocity_ins__AccountId__c,vlocity_ins__AccountId__r.Name

                                    from vlocity_ins__Party__c where vlocity_ins__AccountId__r.Name like :filter limit 10]){

                                        if(!dupcheckMap.containsKey(String.valueOf(p.vlocity_ins__AccountId__c))){

                                        lookupoptions.add(new Map<String,String>{'Id'=>String.valueOf(p.vlocity_ins__AccountId__c),'Name'=>String.valueOf(p.vlocity_ins__AccountId__r.Name,'PartyId1'=>String.valueOf(Id))});

                                        dupcheckMap.put(String.valueOf(p.vlocity_ins__AccountId__c),String.valueOf(p.vlocity_ins__AccountId__r.Name));

                                        }

       }   

       outMap.put('suggestions',lookupoptions);

       return true;

   }

}