diff --git a/src/Controllers/Common/ContentController.cs b/src/Controllers/Common/ContentController.cs
index 44bc747..45173cc 100644
--- a/src/Controllers/Common/ContentController.cs
+++ b/src/Controllers/Common/ContentController.cs
@@ -208,6 +208,42 @@ public class ContentController : Controller {
         return Ok(response);
     }
 
+    [HttpPost]
+    [Produces("application/xml")]
+    [Route("ContentWebService.asmx/SetCommonInventoryAttribute")]
+    [VikingSession]
+    public IActionResult SetCommonInventoryAttribute(Viking viking, [FromForm] int commonInventoryID, [FromForm] string pairxml) {
+        InventoryItem? item = viking.InventoryItems.FirstOrDefault(e => e.Id == commonInventoryID);
+
+        List<Schema.Pair> itemAttributes;
+        if (item.AttributesSerialized != null) {
+            itemAttributes = XmlUtil.DeserializeXml<Schema.PairData>(item.AttributesSerialized).Pairs.ToList();
+        } else {
+            itemAttributes = new List<Schema.Pair>();
+        }
+
+        Schema.PairData newItemAttributes = XmlUtil.DeserializeXml<Schema.PairData>(pairxml);
+        foreach (var p in newItemAttributes.Pairs) {
+            var pairItem = itemAttributes.FirstOrDefault(e => e.PairKey == p.PairKey);
+            if (pairItem != null){
+                pairItem.PairValue = p.PairValue;
+            } else {
+                itemAttributes.Add(p);
+            }
+        }
+
+        if (itemAttributes.Count > 0) {
+            item.AttributesSerialized = XmlUtil.SerializeXml(
+                new Schema.PairData{
+                    Pairs = itemAttributes.ToArray()
+                }
+            );
+        }
+
+        ctx.SaveChanges();
+        return Ok(true);
+    }
+
     [HttpPost]
     [Produces("application/xml")]
     [Route("ContentWebService.asmx/UseInventory")]
diff --git a/src/Model/InventoryItem.cs b/src/Model/InventoryItem.cs
index 02a62dc..ea6c5d1 100644
--- a/src/Model/InventoryItem.cs
+++ b/src/Model/InventoryItem.cs
@@ -8,9 +8,11 @@ namespace sodoff.Model {
         public int ItemId { get; set; }
 
         public int VikingId { get; set; }
-        
+
         public string? StatsSerialized { get; set; }
 
+        public string? AttributesSerialized { get; set; }
+
         public virtual Viking Viking { get; set; } = null!;
 
         public int Quantity { get; set; }
diff --git a/src/Services/InventoryService.cs b/src/Services/InventoryService.cs
index 9b4e8fb..ad2c062 100644
--- a/src/Services/InventoryService.cs
+++ b/src/Services/InventoryService.cs
@@ -136,6 +136,9 @@ namespace sodoff.Services {
                     uid.ItemStats = itemData.ItemStatsMap?.ItemStats;
                     uid.ItemTier = itemData.ItemStatsMap?.ItemTier;
                 }
+                if (item.AttributesSerialized != null) {
+                    uid.UserItemAttributes = XmlUtil.DeserializeXml<Schema.PairData>(item.AttributesSerialized);
+                }
                 userItemData.Add(uid);
             }
 
@@ -149,7 +152,7 @@ namespace sodoff.Services {
             ItemData itemData = itemService.GetItem(itemId);
             if (itemData.PossibleStatsMap != null) // dragons tactics (battle) items
                 return true;
-            if (itemService.ItemHasCategory(itemData, 541)) // farm expansion
+            if (itemService.ItemHasCategory(itemData, new int[] {541, 657})) // farm expansion or customizable items
                 return true;
             return false;
         }