diff --git a/modules/api_v2.js b/modules/api_v2.js
index 8902ed8..54c0c41 100644
--- a/modules/api_v2.js
+++ b/modules/api_v2.js
@@ -190,9 +190,9 @@ app.apiRouter.post('/api/v2/judge/update2', async (req, res) => {
     judge_state.score = data.score;
     judge_state.pending = false;
     judge_state.status = data.statusString;
-    this.total_time = data.time;
-    this.max_memory = data.memory;
-    this.result = data.result;
+    judge_state.total_time = data.time;
+    judge_state.max_memory = data.memory;
+    judge_state.result = data.result;
     await judge_state.save();
     await judge_state.updateRelatedInfo();
 
diff --git a/modules/enums.js b/modules/enums.js
new file mode 100644
index 0000000..7e9c862
--- /dev/null
+++ b/modules/enums.js
@@ -0,0 +1,6 @@
+var ProblemType;
+(function (ProblemType) {
+    ProblemType[ProblemType["Standard"] = 1] = "Standard";
+    ProblemType[ProblemType["AnswerSubmission"] = 2] = "AnswerSubmission";
+    ProblemType[ProblemType["Interaction"] = 3] = "Interaction";
+})(ProblemType = exports.ProblemType || (exports.ProblemType = {}));
\ No newline at end of file
diff --git a/modules/judge.js b/modules/judge.js
new file mode 100644
index 0000000..f012aa4
--- /dev/null
+++ b/modules/judge.js
@@ -0,0 +1,44 @@
+const enums = require('./enums'),
+    rp = require('request-promise'),
+    url = require('url');
+
+module.exports.judge = async function (judge_state, priority) {
+    let type, param;
+    switch (judge_state.problem.type) {
+        case 'submit-answer':
+            type = enums.ProblemType.AnswerSubmission;
+            break;
+        case 'interaction':
+            type = enums.ProblemType.Interaction;
+            break;
+        default:
+            type = enums.ProblemType.Standard;
+            param = {
+                language: judge_state.language,
+                code: judge_state.code,
+                timeLimit: judge_state.problem.time_limit,
+                memoryLimit: judge_state.problem.memory_limit,
+                fileIOInput: judge_state.problem.file_io ? judge_state.problem.file_io_input_name : null,
+                fileIOOutput: judge_state.problem.file_io ? judge_state.problem.file_io_output_name : null
+            };
+            break;
+    }
+
+    const req = {
+        taskId: judge_state.id,
+        testData: judge_state.problem.id.toString(),
+        type: type,
+        priority: priority,
+        param: param
+    };
+
+    await rp(url.resolve(syzoj.config.judge_server_addr, "/daemon/task"), {
+        method: 'PUT',
+        body: req,
+        headers: {
+            Token: syzoj.config.judge_token
+        },
+        json: true,
+        simple: true
+    });
+}
\ No newline at end of file