diff --git a/src/flow/lib/models/service.rb b/src/flow/lib/models/service.rb
index 5c7d4e3b99..9ef486bd70 100644
--- a/src/flow/lib/models/service.rb
+++ b/src/flow/lib/models/service.rb
@@ -403,6 +403,34 @@ module OpenNebula
             return @body['shutdown_action']
         end
 
+        # Replaces the template contents
+        #
+        # @param template_json [String] New template contents
+        # @param append [true, false] True to append new attributes instead of
+        #   replace the whole template
+        #
+        # @return [nil, OpenNebula::Error] nil in case of success, Error
+        #   otherwise
+        def update(template_json=nil, append=false)
+            if template_json
+                template = JSON.parse(template_json)
+
+                if append
+                    rc = info
+
+                    if OpenNebula.is_error? rc
+                        return rc
+                    end
+
+                    template = @body.merge(template)
+                end
+
+                template_json = template.to_json
+            end
+
+            super(template_json, append)
+        end
+
         # Replaces the raw template contents
         #
         # @param template [String] New template contents, in the form KEY = VAL
diff --git a/src/flow/lib/models/service_template.rb b/src/flow/lib/models/service_template.rb
index 39e7f2affc..ba8c7b15c9 100644
--- a/src/flow/lib/models/service_template.rb
+++ b/src/flow/lib/models/service_template.rb
@@ -209,10 +209,10 @@ module OpenNebula
         def update(template_json, append=false)
             template = JSON.parse(template_json)
 
-            if(append)
-                rc = info()
+            if append
+                rc = info
 
-                if(OpenNebula.is_error?(rc))
+                if OpenNebula.is_error? rc
                     return rc
                 end
 
diff --git a/src/flow/oneflow-server.rb b/src/flow/oneflow-server.rb
index 866d1d4217..74b696df85 100644
--- a/src/flow/oneflow-server.rb
+++ b/src/flow/oneflow-server.rb
@@ -248,20 +248,24 @@ post '/service/:id/action' do
         when 'rename'
             service.rename(opts['name'])
         when 'update'
-            if opts && opts['template_raw']
-                if (opts['append'] == true)
-                    rc = service.update_raw(
-                        opts['template_raw'],
-                        (opts['append'] == true))
-
+            if opts && opts['append']
+                if opts['template_json']
+                    begin
+                        rc = service.update(opts['template_json'], true)
+                        status 204
+                    rescue Validator::ParseException, JSON::ParserError
+                        OpenNebula::Error.new($!.message)
+                    end
+                elsif opts['template_raw']
+                    rc = service.update_raw(opts['template_raw'], true)
                     status 204
                 else
                     OpenNebula::Error.new("Action #{action['perform']}: " <<
-                            "Only supported for append")
+                            "You have to provide a template")
                 end
             else
                 OpenNebula::Error.new("Action #{action['perform']}: " <<
-                        "You have to provide a raw template")
+                        "Only supported for append")
             end
         else
             OpenNebula::Error.new("Action #{action['perform']} not supported")
diff --git a/src/sunstone/public/app/tabs/oneflow-services-tab/form-panels/create.js b/src/sunstone/public/app/tabs/oneflow-services-tab/form-panels/create.js
index b30895bc42..c93975fae1 100644
--- a/src/sunstone/public/app/tabs/oneflow-services-tab/form-panels/create.js
+++ b/src/sunstone/public/app/tabs/oneflow-services-tab/form-panels/create.js
@@ -23,6 +23,8 @@ define(function(require) {
   var Locale = require('utils/locale');
   var Tips = require('utils/tips');
   var TemplatesTable = require('tabs/oneflow-templates-tab/datatable');
+  var TemplateUtils = require('utils/template-utils');
+
   /*
     CONSTANTS
    */
diff --git a/src/sunstone/public/app/tabs/oneflow-templates-tab/form-panels/create.js b/src/sunstone/public/app/tabs/oneflow-templates-tab/form-panels/create.js
index 12bd2b5de2..32be38d488 100644
--- a/src/sunstone/public/app/tabs/oneflow-templates-tab/form-panels/create.js
+++ b/src/sunstone/public/app/tabs/oneflow-templates-tab/form-panels/create.js
@@ -25,6 +25,7 @@ define(function(require) {
   var Locale = require('utils/locale');
   var Tips = require('utils/tips');
   var RoleTab = require('tabs/oneflow-templates-tab/utils/role-tab');
+  var TemplateUtils = require('utils/template-utils');
 
   /*
     TEMPLATES
@@ -230,7 +231,7 @@ define(function(require) {
     json_template['ready_status_gate'] = ready_status_gate;
 
     var templateStr = $('textarea#template', $("form#createServiceTemplateFormAdvanced")).val();
-    var template_final = TemplateUtils.mergeTemplates(templateJSON, templateStr);
+    var template_final = TemplateUtils.mergeTemplates(json_template, templateStr);
     if (this.action == "create") {
       Sunstone.runAction("ServiceTemplate.create", template_final );
       return false;
diff --git a/src/sunstone/public/app/utils/labels/utils.js b/src/sunstone/public/app/utils/labels/utils.js
index 64ef6c2d25..4f9354abac 100644
--- a/src/sunstone/public/app/utils/labels/utils.js
+++ b/src/sunstone/public/app/utils/labels/utils.js
@@ -260,10 +260,15 @@ define(function(require) {
   }
 
   function _updateResouceLabels(tabName, resourceId, labelsArray) {
-    var templateStr = LABELS_ATTR + '="' + labelsArray.join(',') + '"';
     var resource = Sunstone.getResource(tabName);
     var tabTable = Sunstone.getDataTable(tabName);
 
+    if (resource == "ServiceTemplate" || resource == "Service") {
+      var templateStr = '{"' + LABELS_ATTR.toLowerCase() + '":"' + labelsArray.join(',') + '"}';
+    } else {
+      var templateStr = LABELS_ATTR + '="' + labelsArray.join(',') + '"';
+    }
+
     OpenNebula[resource].append({
       timeout: true,
       data : {
@@ -294,7 +299,11 @@ define(function(require) {
   }
 
   function _labelsStr(elementTemplate) {
-    return TemplateUtils.htmlEncode( elementTemplate[LABELS_ATTR] );
+    if (elementTemplate['BODY'] && elementTemplate["BODY"][LABELS_ATTR.toLowerCase()]) {
+      return TemplateUtils.htmlEncode(elementTemplate["BODY"][LABELS_ATTR.toLowerCase()]);
+    } else {
+      return TemplateUtils.htmlEncode( elementTemplate[LABELS_ATTR] );
+    }
   }
 
   function _deserializeLabels(labelsStr) {
@@ -415,7 +424,13 @@ define(function(require) {
         } else {
           template = element.TEMPLATE;
         }
-        return template[LABELS_ATTR]||'';
+
+        if (template["BODY"] && template["BODY"][LABELS_ATTR.toLowerCase()]) {
+          return template["BODY"][LABELS_ATTR.toLowerCase()];
+        } else {
+          return template[LABELS_ATTR]||'';
+        }
+
       } else {
         return '';
       }