diff --git a/port/linux/.vscode/launch.json b/port/linux/.vscode/launch.json
index 998f2b330..b9967dd3f 100644
--- a/port/linux/.vscode/launch.json
+++ b/port/linux/.vscode/launch.json
@@ -13,7 +13,7 @@
             "args": [
                 // "--gtest_filter=queueObj.currentObj"
                 // "--gtest_filter=parser*"
-                // "--gtest_filter=VM.Run_add_1_2_3"
+                "--gtest_filter=VM.while_a_d_x"
                 // "--gtest_filter=block.ifrun2"
                 // "--gtest_filter=sysObj.print"
                 // "--gtest_filter=object_test.a_b"
diff --git a/port/linux/package/pikascript/rust-msc-latest-linux b/port/linux/package/pikascript/rust-msc-latest-linux
index 4ebe06095..377757c4b 100755
Binary files a/port/linux/package/pikascript/rust-msc-latest-linux and b/port/linux/package/pikascript/rust-msc-latest-linux differ
diff --git a/port/linux/test/VM-test.cpp b/port/linux/test/VM-test.cpp
index b03abea07..b6292d679 100644
--- a/port/linux/test/VM-test.cpp
+++ b/port/linux/test/VM-test.cpp
@@ -1,6 +1,7 @@
 #include "gtest/gtest.h"
 extern "C" {
 #include "BaseObj.h"
+#include "PikaMain.h"
 #include "PikaMath_Operator.h"
 #include "PikaParser.h"
 #include "PikaStdLib_SysObj.h"
@@ -297,4 +298,25 @@ TEST(VM, while_a_1to10) {
     args_deinit(buffs);
     ASSERT_FLOAT_EQ(res, 10);
     EXPECT_EQ(pikaMemNow(), 0);
+}
+
+TEST(VM, while_a_d_x) {
+    char* line = (char*)
+    "mem = PikaStdLib.MemChecker()\n"
+    "mem.x = 1\n"
+    "print(mem.x)\n"
+    "mem.x = 2\n"
+    "print(mem.x)\n"
+    "\n";
+    Args* buffs = New_strBuff();
+    char* pikaAsm = pikaParseMultiLineToAsm(buffs, line);
+    printf("%s", pikaAsm);
+    PikaObj* self = newRootObj((char*)"", New_PikaMain);
+    args_deinit(pikaVM_runAsm(self, pikaAsm));
+
+    int res = obj_getInt(self, (char*)"mem.x");
+    obj_deinit(self);
+    args_deinit(buffs);
+    ASSERT_FLOAT_EQ(res, 2);
+    EXPECT_EQ(pikaMemNow(), 0);
 }
\ No newline at end of file
diff --git a/src/PikaVM.c b/src/PikaVM.c
index f79d1f11a..48996fde0 100644
--- a/src/PikaVM.c
+++ b/src/PikaVM.c
@@ -115,7 +115,10 @@ Arg* pikaVM_runAsmInstruct(PikaObj* self,
     }
     if (instruct == OUT) {
         Arg* outArg = arg_copy(queue_popArg(invokeQuene0));
-        outArg = arg_setName(outArg, data);
+        Args* buffs = New_strBuff();
+        char* argName = strsGetLastToken(buffs, data, '.');
+        outArg = arg_setName(outArg, argName);
+        args_deinit(buffs);
         obj_setArg(self, data, outArg);
         arg_deinit(outArg);
         return NULL;
@@ -127,7 +130,8 @@ Arg* pikaVM_runAsmInstruct(PikaObj* self,
         if (strEqu(data, (char*)"False")) {
             return arg_setInt(NULL, "", 0);
         }
-        return arg_copy(obj_getArg(self, data));
+        Arg* arg = arg_copy(obj_getArg(self, data));
+        return arg;
     }
     if (instruct == JMP) {
         *jmp = fast_atoi(data);
@@ -561,8 +565,8 @@ Args* pikaVM_runAsm(PikaObj* self, char* pikaAsm) {
             __platformPrintf("%s\r\n", sysOut);
         }
         if (0 != errcode) {
-            Args *buffs = New_strBuff();
-            char *onlyThisLine = strsGetFirstToken(buffs, thisLine, '\n');
+            Args* buffs = New_strBuff();
+            char* onlyThisLine = strsGetFirstToken(buffs, thisLine, '\n');
             __platformPrintf("[info] input commond: %s\r\n", onlyThisLine);
             args_deinit(buffs);
         }