Index: json-c-0.13.1/json_object.c
===================================================================
--- json-c-0.13.1.orig/json_object.c	2016-01-05 14:59:33.130930892 +0800
+++ json-c-0.13.1/json_object.c	2016-01-05 15:00:40.143747176 +0800
@@ -243,6 +243,7 @@
 		case json_type_uint16:
 		case json_type_uint8:
 		case json_type_ulong:
+		case json_type_int:
 			jso->_to_json_string = &json_object_int_to_json_string;
 			break;
 		case json_type_object:
@@ -811,6 +812,32 @@
   json_object_generic_delete(jso);
 }
 
+int json_object_set_param(struct json_object *jso, char* v)
+{
+  if(!jso) return 0;
+  switch(jso->o_type) {
+  case json_type_boolean:
+    jso->o.c_boolean = (json_bool)atoi(v);
+    break;
+  case json_type_int:
+    jso->o.c_int64 = (int32_t)atoi(v);
+    break;
+  case json_type_string:
+    if(jso->o.c_string.str) {
+		free(jso->o.c_string.str);
+		jso->o.c_string.str = NULL;
+		jso->o.c_string.len = 0;
+	}
+	jso->o.c_string.str = strdup(v);
+    jso->o.c_string.len = strlen(v);
+    break;
+  case json_type_double:
+  default:
+    break;
+  }
+
+  return 0;
+}
 #if 1 /* zyxel, john */
 int json_object_array_delete_idx(struct json_object *jso,
 					      int idx)
Index: json-c-0.13.1/json_object.h
===================================================================
--- json-c-0.13.1.orig/json_object.h	2016-01-05 14:59:33.122930858 +0800
+++ json-c-0.13.1/json_object.h	2016-01-05 15:00:16.371145307 +0800
@@ -624,6 +624,8 @@
 					      int idx);
 #endif
 
+int json_object_set_param(struct json_object *obj, char *v);
+
 #ifdef __cplusplus
 }
 #endif