return new ArrayList<>();
     }
 
-    public Map<String, Object> filterNodeTemplatePropertiesByValue(NodeTemplate nodeTemplate, FilterType filterType, String pattern) {
-        Map<String, Object> filterMap = new HashMap<>();
+    public Map<String, String> filterNodeTemplatePropertiesByValue(NodeTemplate nodeTemplate, FilterType filterType, String pattern) {
+        Map<String, String> filterMap = new HashMap<>();
 
         if (nodeTemplate == null) {
             log.error("filterNodeTemplatePropertiesByValue nodeTemplate is null");
     }
 
     /************************************* helper functions ***********************************/
-    private Map<String, Object> filterProperties(Object property, String path, FilterType filterType, String pattern, Map<String, Object> filterMap) {
+    private Map<String, String> filterProperties(Object property, String path, FilterType filterType, String pattern, Map<String, String> filterMap) {
 
         if (property instanceof Map) {
             for (Map.Entry<String, Object> item: ((Map<String, Object>) property).entrySet()) {
             }
         } else if (property instanceof Function) {
             if (filterType.isMatch(property.toString(), pattern)) {
-                filterMap.put(path, property);
+                filterMap.put(path, property.toString());
             }
         } else {
             if (filterType.isMatch(property.toString(), pattern)) {
-                filterMap.put(path, property);
+                filterMap.put(path, property.toString());
             }
         }
 
 
             if(vfc.getName().equalsIgnoreCase("abstract_ddc"))
             {
                 isChecked = true;
-                Map<String, Object> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfc, FilterType.CONTAINS, "get_input");
+                Map<String, String> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfc, FilterType.CONTAINS, "get_input");
 
                 assertEquals(16, filteredInputs.size());
                 assertEquals("get_input:vnf_id", filteredInputs.get("compute_ddc_metadata#vf_module_id#vnf_id"));
     @Test
     public void testFilterNodeTemplatePropertiesByDummyContains() {
         List<NodeTemplate> vfcs = complexCps.getVfcListByVf("f999e2ca-72c0-42d3-9b11-13f2122fb8ef");
-        Map<String, Object> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfcs.get(0), FilterType.CONTAINS, "dummy");
+        Map<String, String> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfcs.get(0), FilterType.CONTAINS, "dummy");
         assertNotNull(filteredInputs);
         assertEquals(0, filteredInputs.size());
     }
             if(vfc.getName().equalsIgnoreCase("abstract_ddc"))
             {
                 isChecked = true;
-                Map<String, Object> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfc, FilterType.EQUALS, "ddc");
+                Map<String, String> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfc, FilterType.EQUALS, "ddc");
 
                 assertEquals(2, filteredInputs.size());
                 assertEquals("ddc", filteredInputs.get("vm_type_tag"));
         }
         assertTrue(isChecked);
     }
+
+       @Test
+       public void testFilterNodeTemplatePropertiesByDummyEquals() {
+               List<NodeTemplate> vfcs = complexCps.getVfcListByVf("f999e2ca-72c0-42d3-9b11-13f2122fb8ef");
+               Map<String, String> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfcs.get(0), FilterType.EQUALS, "dummy");
+               assertNotNull(filteredInputs);
+               assertEquals(0, filteredInputs.size());
+       }
+
+       @Test
+       public void testFilterNodeTemplatePropertiesByNullFilterType() {
+               List<NodeTemplate> vfcs = complexCps.getVfcListByVf("f999e2ca-72c0-42d3-9b11-13f2122fb8ef");
+               Map<String, String> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfcs.get(11), null, "ddc");
+               assertNotNull(filteredInputs);
+               assertEquals(0, filteredInputs.size());
+       }
+
+       @Test
+       public void testFilterNodeTemplatePropertiesByNullPattern() {
+               List<NodeTemplate> vfcs = complexCps.getVfcListByVf("f999e2ca-72c0-42d3-9b11-13f2122fb8ef");
+               Map<String, String> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfcs.get(11), FilterType.EQUALS, null);
+               assertNotNull(filteredInputs);
+               assertEquals(0, filteredInputs.size());
+       }
+
+       @Test
+       public void testFilterNodeTemplatePropertiesByNullVfc() {
+               Map<String, String> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(null, FilterType.EQUALS, "ddc");
+               assertNotNull(filteredInputs);
+               assertEquals(0, filteredInputs.size());
+       }
+       //endregion
     
        //region getServiceNodeTemplateBySdcType
        @Test
        //endregion
            
 
-    @Test
-    public void testFilterNodeTemplatePropertiesByDummyEquals() {
-        List<NodeTemplate> vfcs = complexCps.getVfcListByVf("f999e2ca-72c0-42d3-9b11-13f2122fb8ef");
-        Map<String, Object> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfcs.get(0), FilterType.EQUALS, "dummy");
-        assertNotNull(filteredInputs);
-        assertEquals(0, filteredInputs.size());
-    }
-
-    @Test
-    public void testFilterNodeTemplatePropertiesByNullFilterType() {
-        List<NodeTemplate> vfcs = complexCps.getVfcListByVf("f999e2ca-72c0-42d3-9b11-13f2122fb8ef");
-        Map<String, Object> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfcs.get(11), null, "ddc");
-        assertNotNull(filteredInputs);
-        assertEquals(0, filteredInputs.size());
-    }
-
-    @Test
-    public void testFilterNodeTemplatePropertiesByNullPattern() {
-        List<NodeTemplate> vfcs = complexCps.getVfcListByVf("f999e2ca-72c0-42d3-9b11-13f2122fb8ef");
-        Map<String, Object> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(vfcs.get(11), FilterType.EQUALS, null);
-        assertNotNull(filteredInputs);
-        assertEquals(0, filteredInputs.size());
-    }
 
-    @Test
-    public void testFilterNodeTemplatePropertiesByNullVfc() {
-        Map<String, Object> filteredInputs = complexCps.filterNodeTemplatePropertiesByValue(null, FilterType.EQUALS, "ddc");
-        assertNotNull(filteredInputs);
-        assertEquals(0, filteredInputs.size());
-    }
-    //endregion
 }