diff --git a/src/main/java/io/github/skydynamic/quickbackupmulti/command/PermissionCommand.java b/src/main/java/io/github/skydynamic/quickbackupmulti/command/PermissionCommand.java
index b863ed0..7cc0790 100644
--- a/src/main/java/io/github/skydynamic/quickbackupmulti/command/PermissionCommand.java
+++ b/src/main/java/io/github/skydynamic/quickbackupmulti/command/PermissionCommand.java
@@ -1,5 +1,6 @@
 package io.github.skydynamic.quickbackupmulti.command;
 
+import com.mojang.authlib.GameProfile;
 import com.mojang.brigadier.arguments.IntegerArgumentType;
 import com.mojang.brigadier.builder.LiteralArgumentBuilder;
 import io.github.skydynamic.quickbackupmulti.command.permission.PermissionManager;
@@ -8,11 +9,11 @@
 import net.minecraft.command.argument.GameProfileArgumentType;
 import net.minecraft.server.command.CommandManager;
 import net.minecraft.server.command.ServerCommandSource;
-import net.minecraft.server.network.ServerPlayerEntity;
+
+import java.util.Collection;
 
 import static io.github.skydynamic.quickbackupmulti.QbmConstant.permissionManager;
 import static io.github.skydynamic.quickbackupmulti.i18n.Translate.tr;
-import static io.github.skydynamic.quickbackupmulti.utils.QbmManager.getPlayerFromCommandSource;
 import static net.minecraft.server.command.CommandManager.literal;
 
 public class PermissionCommand {
@@ -21,39 +22,48 @@ public class PermissionCommand {
         .then(literal("set")
             .then(CommandManager.argument("player", GameProfileArgumentType.gameProfile())
                 .then(CommandManager.argument("level", IntegerArgumentType.integer(0, 2))
-                    .executes(it -> setPermission(it.getSource(), IntegerArgumentType.getInteger(it, "level")))
+                    .executes(it -> setPermission(
+                            it.getSource(),
+                            GameProfileArgumentType.getProfileArgument(it, "player"),
+                            IntegerArgumentType.getInteger(it, "level")
+                    ))
                 )
             )
         )
         .then(literal("get")
             .then(CommandManager.argument("player", GameProfileArgumentType.gameProfile())
-                .executes(it -> getPermission(it.getSource()))
+                .executes(it -> getPermission(
+                    it.getSource(),
+                    GameProfileArgumentType.getProfileArgument(it, "player")
+                ))
             )
         )
         .then(literal("reload")
             .executes(it -> reloadPermission(it.getSource()))
         );
 
-    private static int setPermission(ServerCommandSource commandSource, int level) {
-        ServerPlayerEntity player = getPlayerFromCommandSource(commandSource);
-        permissionManager.setPermissionByPermissionLevelInt(level, player);
-        Messenger.sendMessage(commandSource,
+    private static int setPermission(ServerCommandSource commandSource, Collection<GameProfile> players, int level) {
+        players.forEach(player -> {
+            permissionManager.setPermissionByPermissionLevelInt(level, player.getName());
+            Messenger.sendMessage(commandSource,
             Messenger.literal(
                 tr("quickbackupmulti.permission.set",
-                    player.getName().getString(),
+                    player.getName(),
                     PermissionType.getByLevelInt(level).name()))
         );
+        });
         return 1;
     }
 
-    private static int getPermission(ServerCommandSource commandSource) {
-        ServerPlayerEntity player = getPlayerFromCommandSource(commandSource);
-        Messenger.sendMessage(commandSource,
-            Messenger.literal(
-                tr("quickbackupmulti.permission.get",
-                    player.getName().getString(),
-                    permissionManager.getPlayerPermission(player).name()))
-        );
+    private static int getPermission(ServerCommandSource commandSource, Collection<GameProfile> players) {
+        players.forEach(player -> {
+            Messenger.sendMessage(commandSource,
+                Messenger.literal(
+                    tr("quickbackupmulti.permission.get",
+                        player.getName(),
+                        permissionManager.getPlayerPermission(player.getName()).name()))
+            );
+        });
         return 1;
     }
 
diff --git a/src/main/java/io/github/skydynamic/quickbackupmulti/command/permission/PermissionManager.java b/src/main/java/io/github/skydynamic/quickbackupmulti/command/permission/PermissionManager.java
index 7882cbe..5272c0c 100644
--- a/src/main/java/io/github/skydynamic/quickbackupmulti/command/permission/PermissionManager.java
+++ b/src/main/java/io/github/skydynamic/quickbackupmulti/command/permission/PermissionManager.java
@@ -32,19 +32,19 @@ public PermissionManager() {
         }
     }
 
-    public void setPermissionByPermissionLevelInt(int level, ServerPlayerEntity player) {
-        this.permissionConfig.setByPermissionType(PermissionType.getByLevelInt(level), player);
+    public void setPermissionByPermissionLevelInt(int level, String playerName) {
+        this.permissionConfig.setByPermissionType(PermissionType.getByLevelInt(level), playerName);
     }
 
-    public void setPermissionByPermissionType(PermissionType permission, ServerPlayerEntity player) {
-        this.permissionConfig.setByPermissionType(permission, player);
+    public void setPermissionByPermissionType(PermissionType permission, String playerName) {
+        this.permissionConfig.setByPermissionType(permission, playerName);
     }
 
-    public PermissionType getPlayerPermission(ServerPlayerEntity player) {
-        return permissionConfig.perm.getOrDefault(player.getName().getString(), PermissionType.USER);
+    public PermissionType getPlayerPermission(String name) {
+        return permissionConfig.perm.getOrDefault(name, PermissionType.USER);
     }
 
-    public int getPlayerPermissionLevel(ServerPlayerEntity player) {
+    public int getPlayerPermissionLevel(String player) {
         return getPlayerPermission(player).level;
     }
 
@@ -97,7 +97,7 @@ public static boolean hasPermission(
                 return true;
             } else {
                 return source.hasPermissionLevel(mcPermission)
-                    || permissionManager.getPlayerPermissionLevel(player) >= modPermission.level;
+                    || permissionManager.getPlayerPermissionLevel(player.getName().getString()) >= modPermission.level;
             }
         }
         return true;
@@ -123,8 +123,8 @@ private static boolean getPermission(ServerCommandSource source) throws CommandS
 
     static class PermissionConfig {
         private final Map<String, PermissionType> perm = new HashMap<>();
-        public void setByPermissionType(PermissionType type, ServerPlayerEntity player) {
-            perm.put(player.getName().getString(), type);
+        public void setByPermissionType(PermissionType type, String name) {
+            perm.put(name, type);
             permissionManager.savePermissionToFile();
         }
     }