diff --git a/.gitignore b/.gitignore
index 3ba18693..f940fc70 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,5 @@ docs/others/*
 !docs/api/readme.md
 !docs/others/readme.md
 cache
-packages/**/browser
\ No newline at end of file
+packages/**/browser
+vitest.config.ts.timestamp*
\ No newline at end of file
diff --git a/packages/sample2/main/gui/test.tsx b/packages/sample2/main/gui/test.tsx
index 5cafe48f..32d09ce0 100644
--- a/packages/sample2/main/gui/test.tsx
+++ b/packages/sample2/main/gui/test.tsx
@@ -1,8 +1,15 @@
 import { room } from '@rpgjs/client'
 import { RpgReactContext, useObjects, useCurrentPlayer } from '@rpgjs/client/react'
-import { useContext } from 'react'
+import { useContext, useEffect } from 'react'
 
 export default function Test({ gold }) {
-    const player = useCurrentPlayer()
-    return <>{player?.position?.x}</>
+    const { rpgCurrentPlayer } = useContext(RpgReactContext)
+
+    useEffect(() => {
+        rpgCurrentPlayer.subscribe(({ object }) => {
+            console.log('frontend', object.items);
+        })
+    }, [])
+
+    return <>test</>
 }
\ No newline at end of file
diff --git a/packages/sample2/main/player.ts b/packages/sample2/main/player.ts
index a1ed2397..fa3c7a45 100644
--- a/packages/sample2/main/player.ts
+++ b/packages/sample2/main/player.ts
@@ -2,7 +2,6 @@ import { RpgMap } from '@rpgjs/server';
 import { Speed } from '@rpgjs/server';
 import { RpgPlayer, RpgPlayerHooks, Control, Components, RpgEvent, EventData } from '@rpgjs/server'
 import Potion from './database/items/Potion';
-import CharaEvent from './events/npc';
 
 const player: RpgPlayerHooks = {
     onConnected(player: RpgPlayer) {
@@ -26,8 +25,12 @@ const player: RpgPlayerHooks = {
            player.callMainMenu()
         }
     },
-    async onJoinMap(player: RpgPlayer, map: RpgMap) {
-       player.save();
+    async onJoinMap(player: RpgPlayer) {
+        player.gui('test').open();
+
+        setTimeout(() => {
+            player.addItem(Potion, 1);
+        }, 5000);
     }
 }
 
diff --git a/packages/server/package-lock.json b/packages/server/package-lock.json
index 6e2d0df0..25f53b29 100644
--- a/packages/server/package-lock.json
+++ b/packages/server/package-lock.json
@@ -20,7 +20,7 @@
         "pretty-error": "^4.0.0",
         "rxjs": "7.8.0",
         "sat": "^0.9.0",
-        "simple-room": "^3.0.6",
+        "simple-room": "^3.1.0",
         "socket.io": "^4.6.1"
       },
       "devDependencies": {
@@ -6881,9 +6881,9 @@
       }
     },
     "node_modules/simple-room": {
-      "version": "3.0.6",
-      "resolved": "https://registry.npmjs.org/simple-room/-/simple-room-3.0.6.tgz",
-      "integrity": "sha512-2Gz7QY3ZDFCW0Zef2UAdcCGv639yJhnjgdIMz28NAMMTBjVyHXFDLBfB2qkVIXtRwKqTS1ezBK+mbvaLTOiLGA==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/simple-room/-/simple-room-3.1.0.tgz",
+      "integrity": "sha512-cjxNHEs2q9FmWNssrgPI8W92oaDOO+f4wUwF4gNDcPcIc7r6kMD6zPgfjzx7G2dIKQRvcKLHEAjm51xPYlqY9w==",
       "dependencies": {
         "@google-cloud/agones-sdk": "^1.35.0",
         "msgpack-lite": "0.1.26",
@@ -14067,9 +14067,9 @@
       "dev": true
     },
     "simple-room": {
-      "version": "3.0.6",
-      "resolved": "https://registry.npmjs.org/simple-room/-/simple-room-3.0.6.tgz",
-      "integrity": "sha512-2Gz7QY3ZDFCW0Zef2UAdcCGv639yJhnjgdIMz28NAMMTBjVyHXFDLBfB2qkVIXtRwKqTS1ezBK+mbvaLTOiLGA==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/simple-room/-/simple-room-3.1.0.tgz",
+      "integrity": "sha512-cjxNHEs2q9FmWNssrgPI8W92oaDOO+f4wUwF4gNDcPcIc7r6kMD6zPgfjzx7G2dIKQRvcKLHEAjm51xPYlqY9w==",
       "requires": {
         "@google-cloud/agones-sdk": "^1.35.0",
         "msgpack-lite": "0.1.26",
diff --git a/packages/server/package.json b/packages/server/package.json
index 7cf8200f..de4d1109 100644
--- a/packages/server/package.json
+++ b/packages/server/package.json
@@ -38,7 +38,7 @@
     "pretty-error": "^4.0.0",
     "rxjs": "7.8.0",
     "sat": "^0.9.0",
-    "simple-room": "^3.0.6",
+    "simple-room": "^3.1.0",
     "socket.io": "^4.6.1"
   },
   "gitHead": "5abe6ca78be96524d74a052a230f2315c900ddee",
diff --git a/tests/unit-tests/specs/item.spec.ts b/tests/unit-tests/specs/item.spec.ts
index 31ac489c..1f4ab8b2 100644
--- a/tests/unit-tests/specs/item.spec.ts
+++ b/tests/unit-tests/specs/item.spec.ts
@@ -2,7 +2,7 @@ import { Potion, Key } from './fixtures/item'
 import { _beforeEach } from './beforeEach'
 import { clear } from '@rpgjs/testing'
 import { Item } from '@rpgjs/database'
-import { RpgPlayer } from '@rpgjs/server'
+import { RpgPlayer, RpgMap, MapData } from '@rpgjs/server'
 import { beforeEach, test, afterEach, expect, describe, vi } from 'vitest'
 
 let client, fixture, playerId, server
diff --git a/tests/unit-tests/specs/sync.spec.ts b/tests/unit-tests/specs/sync.spec.ts
new file mode 100644
index 00000000..4bbde3d9
--- /dev/null
+++ b/tests/unit-tests/specs/sync.spec.ts
@@ -0,0 +1,67 @@
+import { _beforeEach } from './beforeEach'
+import { clear } from '@rpgjs/testing'
+import { RpgPlayer, RpgMap, MapData, RpgModule, RpgServer } from '@rpgjs/server'
+import { beforeEach, test, afterEach, expect, describe, vi } from 'vitest'
+
+let client, fixture, playerId, server
+let player: RpgPlayer
+
+beforeEach(async () => {
+    const ret = await _beforeEach()
+    client = ret.client
+    player = ret.player
+    fixture = ret.fixture
+    server = ret.server
+    playerId = ret.playerId
+})
+
+describe('Test props', () => {
+    test('sync props', async () => {
+        clear()
+
+        @RpgModule<RpgServer>({
+            player: {
+                props: {
+                    bronze: Number
+                },
+                onJoinMap(player, map) {
+                    player['bronze'] = 100
+                },
+            }
+        })
+        class RpgServerModule {}
+
+        const { server, client } = await _beforeEach([{
+            server: RpgServerModule
+        }])
+
+        await server.send()
+
+        expect(client.player.bronze).toEqual(100)
+    })
+})
+
+// https://community.rpgjs.dev/d/244-playeradditem-bug
+test('change map before, sync player', async () => {
+    const sceneMap = server.sceneMap
+
+    @MapData({
+        id: 'myid',
+        file: require('./fixtures/maps/map.tmx')
+    })
+    class SampleMap extends RpgMap { }
+
+    sceneMap.createDynamicMap(SampleMap)
+
+    await player.changeMap('myid')
+
+    player.gold += 100
+
+    await server.send()
+
+    expect(client.player.gold).toEqual(player.gold)
+})
+
+afterEach(() => {
+    clear()
+})
\ No newline at end of file