can't return instruction

index.js

@@ -250,19 +250,7 @@
 			return func;
 		};
 		exec.return = function () {
-			var result = [].slice.call(arguments);
-			var ins = new Instruction(function () {
-					var final_result = [];
-					for (var i = 0; i < result.length; i++) {
-						if (result[i] && ("function" === typeof result[i]) && (result[i]._ins instanceof Instruction)) {
-							final_result[i] = result[i]._ins.result();
-						} else {
-							final_result[i] = result[i];
-						}
-					}
-					cpu.exit(null, final_result);
-				}, insType.normal);
-			cpu.stack.push(ins);
+			return cpu.exit(null,[].slice.call(arguments));
 		};
 		function _resume() {
 			cpu.resume([].slice.call(arguments));

readme.md

@@ -124,10 +124,10 @@ function sync_code() {
          *
          *  More: you can return multiple result ,like "exec.return(1,2,3,4,5)"
          * */
-        exec.return(exec(function () {
-            return ctx.v;
-        }));
-
+        exec(function(){
+            exec.return(ctx.v);
+        });
+    
     });
 
 }

test/test.js

@@ -118,9 +118,9 @@ describe("basic",function () {
        cc(function (exec,ctx,resume) {
            exec.async(async_func).assign("result")(resume);
 
-           exec.return(exec(function () {
-               return ctx.result[0];
-           }));
+           exec(function(){
+               exec.return(ctx.result[0]);
+           });
 
        })(function (err,result) {