diff --git a/SDK-GMLIB b/SDK-GMLIB
index 7206bf0..710cc6e 160000
--- a/SDK-GMLIB
+++ b/SDK-GMLIB
@@ -1 +1 @@
-Subproject commit 7206bf0c108cb469a5239769604c385150e592e0
+Subproject commit 710cc6e4c3b0e85fd793fba807d8fffd6c4b607f
diff --git a/src/CompatibilityApi.cpp b/src/CompatibilityApi.cpp
index 73b5a0f..bbf8cd5 100644
--- a/src/CompatibilityApi.cpp
+++ b/src/CompatibilityApi.cpp
@@ -78,10 +78,10 @@ void Export_Compatibility_API() {
         return GMLIB_Player::deletePlayerNbt(uid);
     });
     RemoteCall::exportAs("GMLIB_API", "getAllExperiments", []() -> std::vector<int> {
-        auto             map = GMLIB_Level::getAllExperiments();
+        auto             list = GMLIB_Level::getAllExperiments();
         std::vector<int> result;
-        for (auto& key : map) {
-            result.push_back(key.first);
+        for (auto& key : list) {
+            result.push_back((int)key);
         }
         return result;
     });
@@ -96,65 +96,59 @@ void Export_Compatibility_API() {
         "GMLIB_API",
         "createFloatingText",
         [](std::pair<Vec3, int> pos, std::string const& text, bool papi) -> int {
-            auto ft = new GMLIB::Server::StaticFloatingText(text, pos.first, pos.second, papi);
+            auto ft = std::make_shared<GMLIB::Server::StaticFloatingText>(text, pos.first, pos.second, papi);
+            GMLIB::Server::FloatingTextManager::getInstance().add(ft);
             return ft->getRuntimeID();
         }
     );
     RemoteCall::exportAs("GMLIB_API", "setFloatingTextData", [](int id, std::string const& text) -> bool {
-        auto ft = GMLIB::Server::FloatingText::getFloatingText(id);
-        if (ft) {
+        if (auto ft = GMLIB::Server::FloatingTextManager::getInstance().getFloatingText(id)) {
             ft->setText(text);
             return true;
         }
         return false;
     });
     RemoteCall::exportAs("GMLIB_API", "deleteFloatingText", [](int id) -> bool {
-        return GMLIB::Server::FloatingText::deleteFloatingText(id);
+        return GMLIB::Server::FloatingTextManager::getInstance().remove(id);
     });
     RemoteCall::exportAs("GMLIB_API", "sendFloatingTextToPlayer", [](int id, Player* pl) -> bool {
-        auto ft = GMLIB::Server::FloatingText::getFloatingText(id);
-        if (ft) {
-            ft->sendToClient(*pl);
+        if (auto ft = GMLIB::Server::FloatingTextManager::getInstance().getFloatingText(id)) {
+            ft->sendTo(*pl);
             return true;
         }
         return false;
     });
     RemoteCall::exportAs("GMLIB_API", "sendFloatingText", [](int id) -> bool {
-        auto ft = GMLIB::Server::FloatingText::getFloatingText(id);
-        if (ft) {
-            ft->sendToAllClients();
+        if (auto ft = GMLIB::Server::FloatingTextManager::getInstance().getFloatingText(id)) {
+            ft->sendToClients();
             return true;
         }
         return false;
     });
     RemoteCall::exportAs("GMLIB_API", "removeFloatingTextFromPlayer", [](int id, Player* pl) -> bool {
-        auto ft = GMLIB::Server::FloatingText::getFloatingText(id);
-        if (ft) {
-            ft->removeFromClient(*pl);
+        if (auto ft = GMLIB::Server::FloatingTextManager::getInstance().getFloatingText(id)) {
+            ft->removeFrom(*pl);
             return true;
         }
         return false;
     });
     RemoteCall::exportAs("GMLIB_API", "removeFloatingText", [](int id) -> bool {
-        auto ft = GMLIB::Server::FloatingText::getFloatingText(id);
-        if (ft) {
-            ft->removeFromAllClients();
+        if (auto ft = GMLIB::Server::FloatingTextManager::getInstance().getFloatingText(id)) {
+            ft->removeFromClients();
             return true;
         }
         return false;
     });
     RemoteCall::exportAs("GMLIB_API", "updateClientFloatingTextData", [](int id, Player* pl) -> bool {
-        auto ft = GMLIB::Server::FloatingText::getFloatingText(id);
-        if (ft) {
-            ft->updateClient(*pl);
+        if (auto ft = GMLIB::Server::FloatingTextManager::getInstance().getFloatingText(id)) {
+            ft->update(*pl);
             return true;
         }
         return false;
     });
     RemoteCall::exportAs("GMLIB_API", "updateAllClientsFloatingTextData", [](int id) -> bool {
-        auto ft = GMLIB::Server::FloatingText::getFloatingText(id);
-        if (ft) {
-            ft->updateAllClients();
+        if (auto ft = GMLIB::Server::FloatingTextManager::getInstance().getFloatingText(id)) {
+            ft->updateClients();
             return true;
         }
         return false;
diff --git a/src/LegacyModApi.cpp b/src/LegacyModApi.cpp
index 68e5443..b9b41dd 100644
--- a/src/LegacyModApi.cpp
+++ b/src/LegacyModApi.cpp
@@ -162,35 +162,35 @@ void Export_Legacy_GMLib_ModAPI() {
     });
     // 实验性
     RemoteCall::exportAs("GMLib_ModAPI", "registerExperimentsRequire", [](int experiment_id) -> void {
-        auto map = GMLIB_Level::getAllExperiments();
-        if (map.count(experiment_id)) {
+        auto                               list = GMLIB_Level::getAllExperiments();
+        std::unordered_set<AllExperiments> set(list.begin(), list.end());
+        if (set.contains((AllExperiments)experiment_id)) {
             GMLIB_Level::addExperimentsRequire((AllExperiments)experiment_id);
         } else {
             ll::Logger("Server").error("Experiment ID '{}' does not exist!", experiment_id);
         }
     });
     RemoteCall::exportAs("GMLib_ModAPI", "setExperimentEnabled", [](int experiment_id, bool value) -> void {
-        auto level = GMLIB_Level::getInstance();
-        if (!level) {
-            return;
+        if (GMLIB_Level::getInstance()) {
+            auto                               list = GMLIB_Level::getAllExperiments();
+            std::unordered_set<AllExperiments> set(list.begin(), list.end());
+            if (set.contains((AllExperiments)experiment_id)) {
+                GMLIB_Level::getInstance()->setExperimentEnabled(((AllExperiments)experiment_id), value);
+            } else ll::Logger("Server").error("Experiment ID '{}' does not exist!", experiment_id);
         }
-        auto map = GMLIB_Level::getAllExperiments();
-        if (map.count(experiment_id)) {
-            GMLIB_Level::getInstance()->setExperimentEnabled(((AllExperiments)experiment_id), value);
-        } else ll::Logger("Server").error("Experiment ID '{}' does not exist!", experiment_id);
     });
     RemoteCall::exportAs("GMLib_ModAPI", "getExperimentEnabled", [](int experiment_id) -> bool {
-        auto level = GMLIB_Level::getInstance();
-        if (!level) {
-            return false;
-        }
-        auto map = GMLIB_Level::getAllExperiments();
-        if (map.count(experiment_id)) {
-            return GMLIB_Level::getInstance()->getExperimentEnabled(((AllExperiments)experiment_id));
-        } else {
-            ll::Logger("Server").error("Experiment ID '{}' does not exist!", experiment_id);
-            return false;
+        if (GMLIB_Level::getInstance()) {
+            auto                               list = GMLIB_Level::getAllExperiments();
+            std::unordered_set<AllExperiments> set(list.begin(), list.end());
+            if (set.contains((AllExperiments)experiment_id)) {
+                return GMLIB_Level::getInstance()->getExperimentEnabled(((AllExperiments)experiment_id));
+            } else {
+                ll::Logger("Server").error("Experiment ID '{}' does not exist!", experiment_id);
+                return false;
+            }
         }
+        return false;
     });
     RemoteCall::exportAs("GMLib_ModAPI", "setFixI18nEnabled", []() -> void {
         GMLIB::Mod::VanillaFix::setFixI18nEnabled();
diff --git a/src/LegacyServerApi.cpp b/src/LegacyServerApi.cpp
index e6b410e..d829004 100644
--- a/src/LegacyServerApi.cpp
+++ b/src/LegacyServerApi.cpp
@@ -17,18 +17,21 @@ void Export_Legacy_GMLib_ServerAPI() {
         GMLIB_Level::requireServerResourcePackAndAllowClientResourcePack();
     });
     RemoteCall::exportAs("GMLib_ServerAPI", "getLevelName", []() -> std::string {
-        auto level = GMLIB_Level::getInstance();
-        if (!level) {
-            return "";
+        if (auto level = GMLIB_Level::getInstance()) {
+            return level->getLevelName();
         }
-        return level->getLevelName();
+        return {};
     });
     RemoteCall::exportAs("GMLib_ServerAPI", "setLevelName", [](std::string const& name) -> void {
-        auto level = GMLIB_Level::getInstance();
-        if (!level) {
-            return;
+        if (auto level = GMLIB_Level::getInstance()) {
+            level->setLevelName(name);
         }
-        return level->setLevelName(name);
+    });
+    RemoteCall::exportAs("GMLib_ServerAPI", "getLevelSeed", []() -> std::string {
+        if (auto level = GMLIB_Level::getInstance()) {
+            return std::to_string(level->getSeed());
+        }
+        return {};
     });
     RemoteCall::exportAs("GMLib_ServerAPI", "setFakeSeed", [](int64_t seed) -> void {
         return GMLIB_Level::setFakeSeed(seed);
@@ -53,7 +56,7 @@ void Export_Legacy_GMLib_ServerAPI() {
         "throwEntity",
         [](Actor* owner, Actor* actor, float speed, float offset) -> bool {
             auto ac = (GMLIB_Actor*)owner;
-            return ac->throwEntity(actor, speed, offset);
+            return ac->throwEntity(*actor, speed, offset);
         }
     );
     RemoteCall::exportAs("GMLib_ServerAPI", "PlayerToEntity", [](Player* player) -> Actor* { return (Actor*)player; });
diff --git a/src/PlaceholderApi.cpp b/src/PlaceholderApi.cpp
index 75be10a..52519e6 100644
--- a/src/PlaceholderApi.cpp
+++ b/src/PlaceholderApi.cpp
@@ -106,7 +106,7 @@ std::string translateStringWithPlayer(std::string const& str, Player* pl) {
 
 std::string translateString(std::string const& str) { return GMLIB::Server::PlaceholderAPI::translateString(str); }
 
-bool unRegisterPlaceholder(std::string const& str) { return GMLIB::Server::PlaceholderAPI::unRegisterPlaceholder(str); }
+bool unRegisterPlaceholder(std::string const& str) { return GMLIB::Server::PlaceholderAPI::unregisterPlaceholder(str); }
 
 std::vector<std::string> getAllPAPI() { return GMLIB::Server::PlaceholderAPI::getAllPAPI(); }