diff --git a/services/getgroupsettings/getgroupsettings.go b/services/getgroupsettings/getgroupsettings.go
index 76c0d16..4a56c57 100644
--- a/services/getgroupsettings/getgroupsettings.go
+++ b/services/getgroupsettings/getgroupsettings.go
@@ -25,7 +25,9 @@ import (
 	"google.golang.org/api/groupssettings/v1"
 	"google.golang.org/api/option"
 
-	"cloud.google.com/go/pubsub"
+	// pubsubold "cloud.google.com/go/pubsub"
+	pubsub "cloud.google.com/go/pubsub/apiv1"
+	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
 )
 
 // Global structure for global variables to optimize the cloud function performances
@@ -34,7 +36,8 @@ type Global struct {
 	groupsSettingsService *groupssettings.Service
 	initFailed            bool
 	outputTopicName       string
-	pubSubClient          *pubsub.Client
+	// pubSubClient          *pubsubold.Client
+	pubsubPublisherClient *pubsub.PublisherClient
 	retryTimeOutSeconds   int64
 }
 
@@ -71,9 +74,15 @@ func Initialize(ctx context.Context, global *Global) {
 		global.initFailed = true
 		return
 	}
-	global.pubSubClient, err = pubsub.NewClient(ctx, projectID)
+	// global.pubSubClient, err = pubsubold.NewClient(ctx, projectID)
+	// if err != nil {
+	// 	log.Printf("ERROR - pubsubold.NewClient: %v", err)
+	// 	global.initFailed = true
+	// 	return
+	// }
+	global.pubsubPublisherClient, err = pubsub.NewPublisherClient(global.ctx)
 	if err != nil {
-		log.Printf("ERROR - pubsub.NewClient: %v", err)
+		log.Printf("ERROR - global.pubsubPublisherClient: %v", err)
 		global.initFailed = true
 		return
 	}
@@ -111,20 +120,37 @@ func EntryPoint(ctxEvent context.Context, PubSubMessage ram.PubSubMessage, globa
 		feedMessageGroupSettings.Asset.Resource = groupSettings
 	}
 
-	publishRequest := ram.PublishRequest{Topic: global.outputTopicName}
 	feedMessageGroupSettingsJSON, err := json.Marshal(feedMessageGroupSettings)
 	if err != nil {
 		log.Println("ERROR - json.Unmarshal(pubSubMessage.Data, &feedMessageGroup)")
 		return nil // NO RETRY
 	}
-	pubSubMessage := &pubsub.Message{
-		Data: feedMessageGroupSettingsJSON,
-	}
-	id, err := global.pubSubClient.Topic(publishRequest.Topic).Publish(global.ctx, pubSubMessage).Get(global.ctx)
+
+	// publishRequest := ram.PublishRequest{Topic: global.outputTopicName}
+	// pubSubMessage := &pubsubold.Message{
+	// 	Data: feedMessageGroupSettingsJSON,
+	// }
+	// id, err := global.pubSubClient.Topic(publishRequest.Topic).Publish(global.ctx, pubSubMessage).Get(global.ctx)
+	// if err != nil {
+	// 	return fmt.Errorf("pubSubClient.Topic(publishRequest.Topic).Publish: %v", err) // RETRY
+	// }
+	// log.Printf("Group %s %s settings published to pubsub topic %s id %s %s", feedMessageGroup.Asset.Resource.Id, feedMessageGroup.Asset.Resource.Email, global.outputTopicName, id, string(feedMessageGroupSettingsJSON))
+
+	var pubSubMessage pubsubpb.PubsubMessage
+	pubSubMessage.Data = feedMessageGroupSettingsJSON
+
+	var pubsubMessages []*pubsubpb.PubsubMessage
+	pubsubMessages = append(pubsubMessages, &pubSubMessage)
+
+	var publishRequestv1 pubsubpb.PublishRequest
+	publishRequestv1.Topic = global.outputTopicName
+	publishRequestv1.Messages = pubsubMessages
+
+	pubsubResponse, err := global.pubsubPublisherClient.Publish(global.ctx, &publishRequestv1)
 	if err != nil {
-		return fmt.Errorf("pubSubClient.Topic(publishRequest.Topic).Publish: %v", err) // RETRY
+		return fmt.Errorf("global.pubsubPublisherClient.Publish: %v", err) // RETRY
 	}
-	log.Printf("Group %s %s settings published to pubsub topic %s id %s %s", feedMessageGroup.Asset.Resource.Id, feedMessageGroup.Asset.Resource.Email, global.outputTopicName, id, string(feedMessageGroupSettingsJSON))
+	log.Printf("Group %s %s settings published to pubsub topic %s ids %v %s", feedMessageGroup.Asset.Resource.Id, feedMessageGroup.Asset.Resource.Email, global.outputTopicName, pubsubResponse.MessageIds, string(feedMessageGroupSettingsJSON))
 
 	return nil
 }