diff --git a/init.sh b/init.sh
index 5a4499993..3c0efa6b1 100644
--- a/init.sh
+++ b/init.sh
@@ -8,6 +8,7 @@ git checkout master
 cd $ROOT
 rm build -rf
 mkdir build
+sh api-make.sh
 cd build
 cmake -DCMAKE_BUILD_TYPE=Debug ..
 cd $ROOT
diff --git a/src/boot/banchmark/main.c b/src/boot/banchmark/main.c
index 034398f02..20364a107 100644
--- a/src/boot/banchmark/main.c
+++ b/src/boot/banchmark/main.c
@@ -1,6 +1,6 @@
 /* banchmark for memory */
 #include "BaseObj.h"
-#include "SysObj.h"
+#include "PikaStdLib_SysObj.h"
 #include <stdio.h>
 
 void checker_printMem(char *info, uint32_t size)
@@ -68,7 +68,7 @@ int32_t main()
 {
 	checker_objMemChecker(New_TinyObj, "tiny");
 	checker_objMemChecker(New_BaseObj, "base");
-	checker_objMemChecker(New_SysObj, "sys");
+	checker_objMemChecker(New_PikaStdLib_SysObj, "sys");
 	{
 		Arg *arg = New_arg(NULL);
 		checker_printMemUsage("void arg");
diff --git a/src/boot/demo05-sysobject/main.c b/src/boot/demo05-sysobject/main.c
index 9c375faf1..4df3f827e 100644
--- a/src/boot/demo05-sysobject/main.c
+++ b/src/boot/demo05-sysobject/main.c
@@ -1,6 +1,5 @@
 /* this demo shows the usage of method */
-
-#include "SysObj.h"
+#include "PikaStdLib_SysObj.h"
 #include <stdio.h>
 
 void obj_runWithInfo(PikaObj *self, char *cmd)
@@ -13,23 +12,23 @@ void obj_runWithInfo(PikaObj *self, char *cmd)
 int main()
 {
 	/* new root object */
-	PikaObj *root = newRootObj("root", New_SysObj);
+	PikaObj *root = newRootObj("root", New_PikaStdLib_SysObj);
 
 	obj_runWithInfo(root, "set('a',1)");
 	obj_runWithInfo(root, "print(a)");
 	obj_runWithInfo(root, "type('a')");
-	obj_runWithInfo(root, "del('a')");
+	obj_runWithInfo(root, "remove('a')");
 
 	obj_runWithInfo(root, "set('a','test')");
 	obj_runWithInfo(root, "print(a)");
 	obj_runWithInfo(root, "type('a')");
-	obj_runWithInfo(root, "del('a')");
+	obj_runWithInfo(root, "remove('a')");
 
 	obj_runWithInfo(root, "set('a',1)");
 	obj_runWithInfo(root, "set('b',a)");
 	obj_runWithInfo(root, "print(b)");
-	obj_runWithInfo(root, "del('a')");
-	obj_runWithInfo(root, "del('b')");
+	obj_runWithInfo(root, "remove('a')");
+	obj_runWithInfo(root, "remove('b')");
 
 	printf("memory used max = %0.2f kB\r\n", pikaMemMax() / 1024.0);
 	printf("memory used now = %0.2f kB\r\n", pikaMemNow() / 1024.0);
diff --git a/src/package/pikascript/CMakeLists.txt b/src/package/pikascript/CMakeLists.txt
index 31ad3641f..f6d93e222 100644
--- a/src/package/pikascript/CMakeLists.txt
+++ b/src/package/pikascript/CMakeLists.txt
@@ -4,4 +4,6 @@ set(BINARY ${CMAKE_PROJECT_NAME})
 file(GLOB_RECURSE SOURCES LIST_DIRECTORIES true *.h *.c)
 set(SOURCES ${SOURCES})
 
-add_library(${BINARY}-core STATIC ${SOURCES})
+add_library(${BINARY}-core
+            STATIC 
+            ${SOURCES})
diff --git a/src/package/pikascript/pikascript-core b/src/package/pikascript/pikascript-core
index 5b5a363ef..d65a013ec 160000
--- a/src/package/pikascript/pikascript-core
+++ b/src/package/pikascript/pikascript-core
@@ -1 +1 @@
-Subproject commit 5b5a363ef2aa5cac0069008b1559cf19cfee0289
+Subproject commit d65a013ec80bbbb4f708762097845dcbd2e129dd
diff --git a/src/package/pikascript/pikascript-lib/PikaStdLib_SysObj.c b/src/package/pikascript/pikascript-lib/PikaStdLib_SysObj.c
index 4eb0bca03..bcd525b80 100644
--- a/src/package/pikascript/pikascript-lib/PikaStdLib_SysObj.c
+++ b/src/package/pikascript/pikascript-lib/PikaStdLib_SysObj.c
@@ -41,7 +41,7 @@ void PikaStdLib_SysObj_ls(PikaObj *self, char *objPath)
         /* no input obj path, use current obj */
         args_foreach(self->attributeList, __foreach_listEachArg, args);
         obj_setSysOut(self, args_getStr(args, "stringOut"));
-        return;
+        goto exit;
     }
     PikaObj *obj = obj_getObj(self, objPath, 0);
     if (NULL == obj)
@@ -49,12 +49,13 @@ void PikaStdLib_SysObj_ls(PikaObj *self, char *objPath)
         /* do not find obj */
         obj_setSysOut(self, "[error] list: object no found.");
         obj_setErrorCode(self, 1);
-        return;
+        goto exit;
     }
     /* list args */
     args_foreach(obj->attributeList, __foreach_listEachArg, args);
     obj_setSysOut(self, args_getStr(args, "stringOut"));
-    return;
+exit:
+    args_deinit(args);
 }
 
 void PikaStdLib_SysObj_new(PikaObj *self, char *classPath, char *objPath)
diff --git a/src/test/object-test.cpp b/src/test/object-test.cpp
index f8705d9d7..9506e6459 100644
--- a/src/test/object-test.cpp
+++ b/src/test/object-test.cpp
@@ -1,7 +1,7 @@
 #include "gtest/gtest.h"
 extern "C"
 {
-#include "SysObj.h"
+#include "PikaStdLib_SysObj.h"
 #include "TinyObj.h"
 #include "BaseObj.h"
 }
@@ -52,7 +52,7 @@ void add(PikaObj *obj, Args *args)
 
 PikaObj *New_PikaObj_test(Args *args)
 {
-    PikaObj *self = New_SysObj(args);
+    PikaObj *self = New_PikaStdLib_SysObj(args);
     class_defineMethod(self, (char *)"hello(name:str, isShow:int)", hello);
     class_defineMethod(self, (char *)"hello2(name1:str, name2:str, name3:str, isShow:int)", hello2);
     class_defineMethod(self, (char *)"testFloat(val1:float, val2:float, isShow:int)->float", testFloat);
@@ -100,7 +100,7 @@ PikaObj *New_MYROOT1(Args *args)
 
 TEST(object_test, test1)
 {
-    PikaObj *process = newRootObj((char *)"sys", New_SysObj);
+    PikaObj *process = newRootObj((char *)"sys", New_PikaStdLib_SysObj);
     float floatTest = 12.231;
     obj_bindFloat(process, (char *)"testFloatBind", &floatTest);
     EXPECT_TRUE(strEqu((char *)"12.231000", obj_print(process, (char *)"testFloatBind")));
@@ -163,7 +163,7 @@ TEST(object_test, test6)
 
 TEST(object_test, test7)
 {
-    PikaObj *sys = newRootObj((char *)"sys", New_SysObj);
+    PikaObj *sys = newRootObj((char *)"sys", New_PikaStdLib_SysObj);
     int32_t a = 0;
     obj_bind(sys, (char *)"int", (char *)"a", &a);
     obj_run(sys, (char *)"set('a', 1)");
@@ -174,16 +174,16 @@ TEST(object_test, test7)
 
 TEST(object_test, test8)
 {
-    PikaObj *sys = newRootObj((char *)"sys", New_SysObj);
+    PikaObj *sys = newRootObj((char *)"sys", New_PikaStdLib_SysObj);
     obj_run(sys, (char *)"set('a', 1)");
-    obj_run(sys, (char *)"del('a')");
+    obj_run(sys, (char *)"remove('a')");
     obj_deinit(sys);
     EXPECT_EQ(pikaMemNow(), 0);
 }
 
 TEST(object_test, test9)
 {
-    PikaObj *sys = newRootObj((char *)"sys", New_SysObj);
+    PikaObj *sys = newRootObj((char *)"sys", New_PikaStdLib_SysObj);
     obj_run(sys, (char *)"ls()");
     obj_setPtr(sys, (char *)"baseClass", (void *)New_TinyObj);
     obj_run(sys, (char *)"ls()");
diff --git a/src/test/sysObj-test.cpp b/src/test/sysObj-test.cpp
index 86dd4c6b7..5de464d50 100644
--- a/src/test/sysObj-test.cpp
+++ b/src/test/sysObj-test.cpp
@@ -1,13 +1,13 @@
 #include "gtest/gtest.h"
 extern "C"
 {
-#include "SysObj.h"
+#include "PikaStdLib_SysObj.h"
 #include "TinyObj.h"
 #include "BaseObj.h"
 }
 TEST(sysObj, print)
 {
-    PikaObj *obj = newRootObj((char *)"test", New_SysObj);
+    PikaObj *obj = newRootObj((char *)"test", New_PikaStdLib_SysObj);
     Args *res = obj_runDirect(obj, (char *)"print('hello world')");
     char *sysOut = args_getSysOut(res);
     int errCode = args_getErrorCode(res);
@@ -21,7 +21,7 @@ TEST(sysObj, print)
 
 TEST(sysObj, set)
 {
-    PikaObj *obj = newRootObj((char *)"test", New_SysObj);
+    PikaObj *obj = newRootObj((char *)"test", New_PikaStdLib_SysObj);
     Args *res = obj_runDirect(obj, (char *)"set('a', 1)");
     int a = obj_getInt(obj, (char *)"a");
     char *sysOut = args_getSysOut(res);
@@ -37,7 +37,7 @@ TEST(sysObj, set)
 
 TEST(sysObj, noMethod)
 {
-    PikaObj *obj = newRootObj((char *)"test", New_SysObj);
+    PikaObj *obj = newRootObj((char *)"test", New_PikaStdLib_SysObj);
     Args *res = obj_runDirect(obj, (char *)"printttt('hello world')");
     char *sysOut = args_getSysOut(res);
     int errCode = args_getErrorCode(res);