diff --git a/port/linux/.vscode/launch.json b/port/linux/.vscode/launch.json
index c5dbca7e3..4dbcd599f 100644
--- a/port/linux/.vscode/launch.json
+++ b/port/linux/.vscode/launch.json
@@ -18,6 +18,7 @@
             "program": "${workspaceFolder}/build/test/pikascript_test",
             // "program": "${workspaceFolder}/../build/src/boot/demo06-pikamain/pikascript_demo06-pikamain",
             "args": [
+                "--gtest_filter=VM.RUN_AS",
                 // "--gtest_filter=parser.add_a_b*",
                 // "--gtest_filter=parser.method_void",
                 // "--gtest_filter=parser.add_a_b",
diff --git a/port/linux/test/VM-test.cpp b/port/linux/test/VM-test.cpp
index 3e1988b86..e6221aaca 100644
--- a/port/linux/test/VM-test.cpp
+++ b/port/linux/test/VM-test.cpp
@@ -10,12 +10,11 @@ extern "C" {
 #include "dataQueue.h"
 #include "dataStrs.h"
 
-
 /* test head */
 VMParameters* pikaVM_runAsmWithPars(PikaObj* self,
-                                  VMParameters* locals,
-                                  VMParameters* globals,
-                                  char* pikaAsm);
+                                    VMParameters* locals,
+                                    VMParameters* globals,
+                                    char* pikaAsm);
 char* Parser_LineToAsm(Args* buffs, char* line, Stack* blockStack);
 char* Parser_multiLineToAsm(Args* outBuffs, char* multiLine);
 int32_t __clearInvokeQueues(VMParameters* locals);
@@ -629,3 +628,34 @@ TEST(VM, EST) {
     EXPECT_EQ(pikaMemNow(), 0);
 }
 
+TEST(VM, RUN_AS) {
+    char* pikaAsm = (char*)
+        "B0\n"
+        "0 RUN PikaStdLib.PikaObj\n"
+        "0 OUT as\n"
+        "B0\n"
+        "0 RAS as\n"
+        "B0\n"
+        "0 NUM 1\n"
+        "0 OUT x\n"
+        "B0\n"
+        "0 RAS $origin\n"
+        "B0\n"
+        "0 NUM 2\n"
+        "0 OUT x\n"
+    ;
+    PikaObj* self = newRootObj((char*)"", New_PikaMain);
+    pikaVM_runAsm(self, pikaAsm);
+    PikaObj* as = obj_getObj(self, (char*)"as", 0);
+    int x_as_ = obj_getInt(as, (char*)"x");
+    int x_as = obj_getInt(self, (char*)"as.x");
+    int x_origin = obj_getInt(self, (char*)"x");
+    /* a is local, should not be exist in globals */
+    EXPECT_EQ(x_as_, 1);
+    EXPECT_EQ(x_as, 1);
+    /* b is local, should not be exist in globals */
+    EXPECT_EQ(x_origin, 2);
+    obj_deinit(self);
+    // obj_deinit(globals);
+    EXPECT_EQ(pikaMemNow(), 0);
+}
diff --git a/src/PikaVM.c b/src/PikaVM.c
index 24e25a9a1..bf66b7f93 100644
--- a/src/PikaVM.c
+++ b/src/PikaVM.c
@@ -44,7 +44,6 @@ VMParameters* pikaVM_runAsmWithPars(PikaObj* self,
 struct VMState_t {
     VMParameters* locals;
     VMParameters* globals;
-    VMParameters* runAs;
     Queue* q0;
     Queue* q1;
     int32_t jmp;
@@ -340,8 +339,8 @@ static Arg* __VM_OUT(PikaObj* self,
         arg_deinit(global_list_arg);
     }
     /* use RunAs object */
-    if (vs->runAs != NULL) {
-        hostObj = vs->runAs;
+    if (args_isArgExist(vs->locals->list, "__runAs")) {
+        hostObj = args_getPtr(vs->locals->list, "__runAs");
     }
     /* ouput arg to locals */
     obj_setArg(hostObj, data, outArg);
@@ -373,12 +372,12 @@ static Arg* VM_instruction_handler_OUT(PikaObj* self, VMState* vs, char* data) {
 static Arg* VM_instruction_handler_RAS(PikaObj* self, VMState* vs, char* data) {
     if (strEqu(data, "$origin")) {
         /* use origin object to run */
-        vs->runAs = NULL;
+        obj_removeArg(vs->locals, "__runAs");
         return NULL;
     }
     /* use "data" object to run */
     PikaObj* runAs = obj_getObj(self, data, 0);
-    vs->runAs = runAs;
+    args_setPtr(vs->locals->list, "__runAs", runAs);
     return NULL;
 }
 
@@ -580,9 +579,9 @@ static Arg* VM_instruction_handler_DEF(PikaObj* self, VMState* vs, char* data) {
     int offset = 0;
     int thisBlockDeepth = __getThisBlockDeepth(vs->ASM_start, vs->pc, &offset);
     PikaObj* hostObj = vs->locals;
-    if (NULL != vs->runAs) {
-        /* use RunAs object */
-        hostObj = vs->runAs;
+    /* use RunAs object */
+    if (args_isArgExist(vs->locals->list, "__runAs")) {
+        hostObj = args_getPtr(vs->locals->list, "__runAs");
     }
     while (1) {
         if ((methodPtr[0] == 'B') &&
@@ -685,7 +684,6 @@ int32_t pikaVM_runAsmLine(PikaObj* self,
     VMState vs = {
         .locals = locals,
         .globals = globals,
-        .runAs = NULL,
         .q0 = NULL,
         .q1 = NULL,
         .jmp = 0,