From 4ffc4e67ab0e4329a60745e7702a21526a413de5 Mon Sep 17 00:00:00 2001
From: Jesse Boyd <jessepaleg@gmail.com>
Date: Thu, 17 May 2018 16:30:31 +1000
Subject: [PATCH] Fixes #1822

---
 .../java/com/intellectualcrafters/plot/commands/Alias.java  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Core/src/main/java/com/intellectualcrafters/plot/commands/Alias.java b/Core/src/main/java/com/intellectualcrafters/plot/commands/Alias.java
index 19c10e2a1..d22dbfe91 100644
--- a/Core/src/main/java/com/intellectualcrafters/plot/commands/Alias.java
+++ b/Core/src/main/java/com/intellectualcrafters/plot/commands/Alias.java
@@ -7,6 +7,7 @@ import com.intellectualcrafters.plot.object.Plot;
 import com.intellectualcrafters.plot.object.PlotPlayer;
 import com.intellectualcrafters.plot.object.StringWrapper;
 import com.intellectualcrafters.plot.util.MainUtil;
+import com.intellectualcrafters.plot.util.MathMan;
 import com.intellectualcrafters.plot.util.Permissions;
 import com.intellectualcrafters.plot.util.UUIDHandler;
 import com.plotsquared.general.commands.CommandDeclaration;
@@ -76,7 +77,6 @@ public class Alias extends SubCommand {
 	
     
     private boolean setAlias(PlotPlayer player, Plot plot, String alias) {
-    	
         if (alias.isEmpty()) {
             C.COMMAND_SYNTAX.send(player, "/plot alias <set> <value>");
             return false;
@@ -89,6 +89,10 @@ public class Alias extends SubCommand {
             C.NOT_VALID_VALUE.send(player);
             return false;
         }
+        if (MathMan.isInteger(alias)) {
+            C.NOT_VALID_VALUE.send(player);
+            return false;
+        }
         for (Plot p : PS.get().getPlots(plot.getArea())) {
             if (p.getAlias().equalsIgnoreCase(alias)) {
                 MainUtil.sendMessage(player, C.ALIAS_IS_TAKEN);