diff --git a/src/main/java/me/chayapak1/chomens_bot/commands/CommandBlockCommand.java b/src/main/java/me/chayapak1/chomens_bot/commands/CommandBlockCommand.java
index 0a34d6e..278bc0e 100644
--- a/src/main/java/me/chayapak1/chomens_bot/commands/CommandBlockCommand.java
+++ b/src/main/java/me/chayapak1/chomens_bot/commands/CommandBlockCommand.java
@@ -5,16 +5,29 @@ import me.chayapak1.chomens_bot.command.Command;
 import me.chayapak1.chomens_bot.command.CommandContext;
 import me.chayapak1.chomens_bot.command.CommandException;
 import me.chayapak1.chomens_bot.command.TrustLevel;
+import me.chayapak1.chomens_bot.data.PlayerEntry;
 import net.kyori.adventure.text.Component;
 
 import java.util.concurrent.CompletableFuture;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
+// based off of HBot's supercb command
 public class CommandBlockCommand extends Command {
+    private static final Pattern USER_PATTERN = Pattern.compile("\\{username\\{(.*?)}}");
+    private static final Pattern UUID_PATTERN = Pattern.compile("\\{uuid\\{(.*?)}}");
+
     public CommandBlockCommand () {
         super(
                 "cb",
                 "Executes a command in the command core and return its output",
-                new String[] { "<command>" },
+                new String[] {
+                        "<command>",
+                        "..{username}..",
+                        "..{uuid}..",
+                        "..{username{regex}}..",
+                        "..{uuid{regex}}.."
+                },
                 new String[] { "cmd", "commandblock", "run", "core" },
                 TrustLevel.PUBLIC,
                 false
@@ -25,16 +38,76 @@ public class CommandBlockCommand extends Command {
     public Component execute(CommandContext context) throws CommandException {
         final Bot bot = context.bot;
 
-        final CompletableFuture<Component> future = bot.core.runTracked(context.getString(true, true));
-
-        if (future == null) return null;
-
-        future.thenApply(output -> {
-            context.sendOutput(output);
-
-            return output;
-        });
+        runCommand(bot, context, context.getString(true, true));
 
         return null;
     }
+
+    private void runCommand (Bot bot, CommandContext context, String command) {
+        final Matcher userMatcher = USER_PATTERN.matcher(command);
+        final Matcher uuidMatcher = UUID_PATTERN.matcher(command);
+
+        final boolean userFound = userMatcher.find();
+        final boolean uuidFound = uuidMatcher.find();
+
+        if (userFound || uuidFound) {
+            Pattern pattern;
+
+            if (userFound) pattern = Pattern.compile(userMatcher.group(1));
+            else pattern = Pattern.compile(uuidMatcher.group(1));
+
+            for (PlayerEntry entry : bot.players.list) {
+                final String username = entry.profile.getName();
+                final String uuid = entry.profile.getIdAsString();
+
+                if (!pattern.matcher(userFound ? username : uuid).matches()) continue;
+
+                String replacedCommand;
+
+                if (userFound) replacedCommand = new StringBuilder(command).replace(userMatcher.start(), userMatcher.end(), username).toString();
+                else replacedCommand = new StringBuilder(command).replace(uuidMatcher.start(), uuidMatcher.end(), uuid).toString();
+
+                replacedCommand = replacedCommand
+                        .replace("{username}", username)
+                        .replace("{uuid}", uuid);
+
+                if (
+                        !replacedCommand.contains("{username}") &&
+                                !replacedCommand.contains("{uuid}") &&
+                                !USER_PATTERN.matcher(username).find() &&
+                                !UUID_PATTERN.matcher(username).find()
+                ) {
+                    runCommand(bot, context, replacedCommand);
+                }
+            }
+        } else if (command.contains("{username}") || command.contains("{uuid}")) {
+            for (PlayerEntry entry : bot.players.list) {
+                final String username = entry.profile.getName();
+                final String uuid = entry.profile.getIdAsString();
+
+                final String replacedCommand = command
+                        .replace("{username}", username)
+                        .replace("{uuid}", uuid);
+
+                if (
+                        !replacedCommand.contains("{username}") &&
+                                !replacedCommand.contains("{Uuuid}") &&
+                                !USER_PATTERN.matcher(username).find() &&
+                                !UUID_PATTERN.matcher(username).find()
+                ) {
+                    runCommand(bot, context, replacedCommand);
+                }
+            }
+        } else {
+            final CompletableFuture<Component> future = bot.core.runTracked(command);
+
+            if (future == null) return;
+
+            future.thenApply(output -> {
+                context.sendOutput(output);
+
+                return output;
+            });
+        }
+    }
 }