diff --git a/src/de/steamwar/inventory/SWListInv.java b/src/de/steamwar/inventory/SWListInv.java
index c104a59..6e7efe5 100644
--- a/src/de/steamwar/inventory/SWListInv.java
+++ b/src/de/steamwar/inventory/SWListInv.java
@@ -92,14 +92,14 @@ public class SWListInv<T> extends SWInventory {
         return onlinePlayers;
     }
 
-    public static List<Pair<SWItem, Schematic>> getSchemList(Player p, SchematicType type){
+    public static List<Pair<SWItem, Schematic>> getSchemList(int warkingUserId, SchematicType type){
         List<Pair<SWItem, Schematic>> schemList = new ArrayList<>();
 
         List<Schematic> schems;
         if(type == null)
-            schems = Schematic.getSchemsAccessibleByUser(p.getUniqueId());
+            schems = Schematic.getSchemsAccessibleByUser(warkingUserId);
         else
-            schems = Schematic.getSchemsOfType(p.getUniqueId(), type);
+            schems = Schematic.getSchemsOfType(warkingUserId, type);
 
         for(Schematic s : schems){
             Material m;