diff --git a/src/AcDream.Core.Net/WorldSession.cs b/src/AcDream.Core.Net/WorldSession.cs
index db21014d..2118ca75 100644
--- a/src/AcDream.Core.Net/WorldSession.cs
+++ b/src/AcDream.Core.Net/WorldSession.cs
@@ -91,7 +91,24 @@ public sealed class WorldSession : IDisposable
         uint IconUnderlayId = 0,
         // D.5.2 (2026-06-17): UiEffects bitfield (weenieFlags 0x80) — drives the icon's
         // effect recolor. CreateObject-only; 0 = no effect.
-        uint UiEffects = 0);
+        uint UiEffects = 0,
+        // D.5.4 (2026-06-18): full item field set, forwarded to the object table.
+        // Quantity fields int? (ACE PropertyInt convention); id/mask fields uint?.
+        uint WeenieClassId = 0,
+        int? Value = null,
+        int? StackSize = null,
+        int? StackSizeMax = null,
+        int? Burden = null,
+        int? ItemsCapacity = null,
+        int? ContainersCapacity = null,
+        uint? ContainerId = null,
+        uint? WielderId = null,
+        uint? ValidLocations = null,
+        uint? CurrentWieldedLocation = null,
+        uint? Priority = null,
+        int? Structure = null,
+        int? MaxStructure = null,
+        float? Workmanship = null);
 
     /// <summary>Fires when the session finishes parsing a CreateObject.</summary>
     public event Action<EntitySpawn>? EntitySpawned;
@@ -745,7 +762,22 @@ public sealed class WorldSession : IDisposable
                         parsed.Value.IconId,
                         parsed.Value.IconOverlayId,
                         parsed.Value.IconUnderlayId,
-                        parsed.Value.UiEffects));
+                        parsed.Value.UiEffects,
+                        parsed.Value.WeenieClassId,
+                        parsed.Value.Value,
+                        parsed.Value.StackSize,
+                        parsed.Value.StackSizeMax,
+                        parsed.Value.Burden,
+                        parsed.Value.ItemsCapacity,
+                        parsed.Value.ContainersCapacity,
+                        parsed.Value.ContainerId,
+                        parsed.Value.WielderId,
+                        parsed.Value.ValidLocations,
+                        parsed.Value.CurrentWieldedLocation,
+                        parsed.Value.Priority,
+                        parsed.Value.Structure,
+                        parsed.Value.MaxStructure,
+                        parsed.Value.Workmanship));
                 }
             }
             else if (op == DeleteObject.Opcode)