diff --git a/dependency-reduced-pom.xml b/dependency-reduced-pom.xml
index 3912626..13aded2 100644
--- a/dependency-reduced-pom.xml
+++ b/dependency-reduced-pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>nl.iobyte</groupId>
   <artifactId>themeparkconnector</artifactId>
-  <version>3.1.0</version>
+  <version>3.1.1</version>
   <build>
     <defaultGoal>clean package</defaultGoal>
     <resources>
diff --git a/pom.xml b/pom.xml
index 452f185..485069d 100755
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
 
     <groupId>nl.iobyte</groupId>
     <artifactId>themeparkconnector</artifactId>
-    <version>3.1.0</version>
+    <version>3.1.1</version>
 
     <repositories>
         <repository>
diff --git a/src/main/java/nl/iobyte/themeparkconnector/api/show/ShowService.java b/src/main/java/nl/iobyte/themeparkconnector/api/show/ShowService.java
index eb6cdaf..5ed7f9d 100755
--- a/src/main/java/nl/iobyte/themeparkconnector/api/show/ShowService.java
+++ b/src/main/java/nl/iobyte/themeparkconnector/api/show/ShowService.java
@@ -25,6 +25,10 @@ public class ShowService {
         if(uuid == null || voucher == null)
             return "Invalid parameters";
 
+        Player player = Bukkit.getPlayer(uuid);
+        if(player == null)
+            return "Invalid player";
+
         try {
             ArrayList<Map<String, Object>> resultSet = ThemePark.getInstance().getAPI().getDatabaseService().executeQuery(
                     "remote",
@@ -93,7 +97,6 @@ public class ShowService {
             NBTCompound compound = item.addCompound("data");
             compound.setString("ticket", g.toJson(ticket, Ticket.class));
 
-            Player player = Bukkit.getPlayer(uuid);
             player.getInventory().addItem(item.getItem());
             return "true";
         } catch(Exception e) {
diff --git a/src/main/java/nl/iobyte/themeparkconnector/commands/ThemeParkConnectorCommand.java b/src/main/java/nl/iobyte/themeparkconnector/commands/ThemeParkConnectorCommand.java
index 4f1bfc8..5659e9c 100755
--- a/src/main/java/nl/iobyte/themeparkconnector/commands/ThemeParkConnectorCommand.java
+++ b/src/main/java/nl/iobyte/themeparkconnector/commands/ThemeParkConnectorCommand.java
@@ -10,17 +10,20 @@ import nl.iobyte.themeparkconnector.commands.subcommands.*;
 import nl.iobyte.themeparkconnector.commands.subcommands.operator.OperatorCommands;
 import org.bukkit.entity.Player;
 
+import java.util.Objects;
+
 public class ThemeParkConnectorCommand {
 
     //Load command data
     public ThemeParkConnectorCommand() {
         CommandFactory factory = new CommandFactory("themeparkconnector");
         factory.addSubCommand(new HelpCommand(factory))
-                .addSubCommand(new ConnectCommand());
+                .addSubCommand(new ConnectCommand())
+                .addSubCommand(new VoucherCommand());
 
         //Admin
         factory.addSubCommand(new StatusCommand())
-                .addSubCommand(new NotificationCommand())
+                .addSubCommand(new VoucherCommand())
                 .addSubCommand(new DisconnectCommand());
 
         //Operator
@@ -30,7 +33,7 @@ public class ThemeParkConnectorCommand {
         factory.addMiddleware(new PermissionMiddleware());
 
         //Register command
-        ThemeParkConnector.getInstance().getCommand(factory.getName()).setExecutor((sender, command, s, args) -> {
+        Objects.requireNonNull(ThemeParkConnector.getInstance().getCommand(factory.getName())).setExecutor((sender, command, s, args) -> {
             ICommandExecutor executor = new ConsoleExecutor(sender);
             if(sender instanceof Player)
                 executor = new PlayerExecutor((Player) sender);
diff --git a/src/main/java/nl/iobyte/themeparkconnector/commands/subcommands/VoucherCommand.java b/src/main/java/nl/iobyte/themeparkconnector/commands/subcommands/VoucherCommand.java
new file mode 100755
index 0000000..bf6e848
--- /dev/null
+++ b/src/main/java/nl/iobyte/themeparkconnector/commands/subcommands/VoucherCommand.java
@@ -0,0 +1,39 @@
+package nl.iobyte.themeparkconnector.commands.subcommands;
+
+import nl.iobyte.commandapi.arguments.StringArgument;
+import nl.iobyte.commandapi.interfaces.ICommandExecutor;
+import nl.iobyte.commandapi.objects.SubCommand;
+import nl.iobyte.themeparkconnector.ThemeParkConnector;
+import nl.iobyte.themeparkconnector.api.message.Text;
+import org.bukkit.entity.Player;
+
+import java.util.List;
+
+public class VoucherCommand extends SubCommand {
+
+    public VoucherCommand() {
+        super(new String[]{"redeem"});
+
+        addSyntax("/themeparkconnector redeem <voucher>")
+                .addArgument(new StringArgument())
+                .setAllowConsole(false);
+    }
+
+    //Get Token and redeem ticket
+    public void onCommand(ICommandExecutor sender, List<Object> objects, int i) {
+        String voucher = (String) objects.get(0);
+
+        String result = ThemeParkConnector.getInstance().getAPI().getShowService().redeemTicket(
+                ((Player) sender.getOriginal()).getUniqueId(),
+                voucher
+        );
+        if(result.equals("true")) {
+            sender.sendMessage(Text.color("&6Redeemed ticket with voucher: &L&f"+voucher));
+            return;
+        }
+
+        ThemeParkConnector.getInstance().getLogger().warning(result);
+        sender.sendMessage(Text.color("&4Invalid voucher: &L&f"+voucher));
+    }
+
+}
diff --git a/src/main/java/nl/iobyte/themeparkconnector/listeners/TicketListener.java b/src/main/java/nl/iobyte/themeparkconnector/listeners/TicketListener.java
index 15b7f74..9d9e2e6 100755
--- a/src/main/java/nl/iobyte/themeparkconnector/listeners/TicketListener.java
+++ b/src/main/java/nl/iobyte/themeparkconnector/listeners/TicketListener.java
@@ -25,6 +25,7 @@ import org.bukkit.inventory.ItemStack;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
+import java.util.Objects;
 
 public class TicketListener implements Listener {
 
@@ -50,7 +51,7 @@ public class TicketListener implements Listener {
         }
 
         String date = e.getLine(2);
-        if(isValidFormat("HH:mm", date) && isValidFormat("HH:mm dd-MM-yyyy", date)) {
+        if(isInvalidFormat("HH:mm", date) && isInvalidFormat("HH:mm dd-MM-yyyy", date)) {
             player.sendMessage(Text.color("&4Can't make a TicketScanner with incorrect date, example: 20:00 or 20:00 04-04-2019"));
             return;
         }
@@ -88,24 +89,24 @@ public class TicketListener implements Listener {
         }
 
         String id = ChatColor.stripColor(sign.getLine(1));
-        if(id == null || id.isEmpty())
+        if(id.isEmpty())
             return;
 
         String date = ChatColor.stripColor(sign.getLine(2));
-        if(date == null || date.isEmpty())
+        if(date.isEmpty())
             return;
 
-        if(isValidFormat("HH:mm", date) && isValidFormat("HH:mm dd-MM-yyyy", date)) {
-            System.out.println("Invalid date format");
+        if(isInvalidFormat("HH:mm", date) && isInvalidFormat("HH:mm dd-MM-yyyy", date)) {
+            ThemeParkConnector.getInstance().getLogger().warning("Invalid date format");
             return;
         }
 
-        if(isValidFormat("HH:mm dd-MM-yyyy", date))
+        if(isInvalidFormat("HH:mm dd-MM-yyyy", date))
             date = date + " " + format.format(new Date());
 
-        Location location = LocationUtil.fromString(sign.getLocation().getWorld().getName() + ":" + sign.getLine(3));
+        Location location = LocationUtil.fromString(Objects.requireNonNull(sign.getLocation().getWorld()).getName() + ":" + sign.getLine(3));
         if(location == null) {
-            System.out.println("Invalid Location");
+            ThemeParkConnector.getInstance().getLogger().warning("Invalid Location");
             return;
         }
 
@@ -118,30 +119,30 @@ public class TicketListener implements Listener {
 
         NBTItem it = new NBTItem(item);
         if(!it.hasKey("data")) {
-            System.out.println("Missing data key");
+            ThemeParkConnector.getInstance().getLogger().warning("Missing data key");
             return;
         }
 
         NBTCompound compound = it.getCompound("data");
         if(!compound.hasKey("ticket")) {
-            System.out.println("Missing ticket key");
+            ThemeParkConnector.getInstance().getLogger().warning("Missing ticket key");
             return;
         }
 
         Gson g = new Gson();
         Ticket ticket = g.fromJson(it.getCompound("data").getString("ticket"), Ticket.class);
         if(ticket == null) {
-            System.out.println("Couldn't get ticket class using Gson");
+            ThemeParkConnector.getInstance().getLogger().warning("Couldn't get ticket class using Gson");
             return;
         }
 
         if(!id.equals(ticket.getShowID())) {
-            System.out.println("Different show id");
+            ThemeParkConnector.getInstance().getLogger().warning("Different show id");
             return;
         }
 
         if(!date.equals(new SimpleDateFormat("HH:mm dd-MM-yyyy").format(ticket.getShowDate()))) {
-            System.out.println("Different date");
+            ThemeParkConnector.getInstance().getLogger().warning("Different date");
             return;
         }
 
@@ -152,7 +153,7 @@ public class TicketListener implements Listener {
         Bukkit.getPluginManager().callEvent(event);
 
         int i = player.getInventory().getHeldItemSlot();
-        player.getInventory().remove(player.getInventory().getItem(i));
+        player.getInventory().remove(Objects.requireNonNull(player.getInventory().getItem(i)));
         if(!b) {
             player.sendMessage(Text.color("&4Invalid ticket."));
             return;
@@ -161,10 +162,10 @@ public class TicketListener implements Listener {
         if(!event.isCancelled())
             player.teleport(location);
 
-        player.sendMessage(Text.color("&6Used ticket for Show: " + item.getItemMeta().getDisplayName()));
+        player.sendMessage(Text.color("&6Used ticket for Show: " + Objects.requireNonNull(item.getItemMeta()).getDisplayName()));
     }
 
-    private static boolean isValidFormat(String format, String value) {
+    private static boolean isInvalidFormat(String format, String value) {
         try {
             SimpleDateFormat sdf = new SimpleDateFormat(format);
             Date date = sdf.parse(value);
diff --git a/src/main/resources/message.yml b/src/main/resources/message.yml
index e137e3b..feac1ba 100755
--- a/src/main/resources/message.yml
+++ b/src/main/resources/message.yml
@@ -1,4 +1,4 @@
-version: 1.0
+version: 1.1
 
 prefix: '&6&lThemeParkConnectorMC &r&f➢'
 
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
index 48e4376..04068bc 100755
--- a/src/main/resources/plugin.yml
+++ b/src/main/resources/plugin.yml
@@ -1,5 +1,5 @@
 name: ThemeParkConnector
-version: 3.0.2
+version: ${project.version}
 author: IOByte
 website: 'https://www.iobyte.nl'
 main: nl.iobyte.themeparkconnector.ThemeParkConnector