字段类型：lua => code

sample/workdir/monster.json

@@ -1 +1,55 @@
-{"name":"monster","root":{"id":1,"name":"Sequence","desc":"怪物测试AI","args":{},"children":[{"id":2,"name":"Sequence","desc":"攻击","args":{},"children":[{"id":3,"name":"GetHp","args":{},"output":["hp"]},{"id":4,"name":"Cmp","args":{"gt":50},"input":["hp"]},{"id":5,"name":"Log","desc":"攻击","args":{"str":"Attack!"}}]},{"id":6,"name":"Log","desc":"逃跑","args":{"str":"Run!"}}]},"desc":"怪物测试AI"}
+{
+  "name": "monster",
+  "root": {
+    "id": 1,
+    "name": "Sequence",
+    "desc": "怪物测试AI",
+    "args": {},
+    "children": [
+      {
+        "id": 2,
+        "name": "Sequence",
+        "desc": "攻击",
+        "args": {},
+        "children": [
+          {
+            "id": 3,
+            "name": "GetHp",
+            "args": {},
+            "output": [
+              "hp"
+            ]
+          },
+          {
+            "id": 4,
+            "name": "Cmp",
+            "args": {
+              "gt": 50,
+              "value": "hp"
+            },
+            "input": [
+              ""
+            ]
+          },
+          {
+            "id": 5,
+            "name": "Log",
+            "desc": "攻击",
+            "args": {
+              "str": "Attack!"
+            }
+          }
+        ]
+      },
+      {
+        "id": 6,
+        "name": "Log",
+        "desc": "逃跑",
+        "args": {
+          "str": "Run!"
+        }
+      }
+    ]
+  },
+  "desc": "怪物测试AI"
+}