diff --git a/B3SheepButcherManage/BO/Bill/FixedPrice/FixedPrice.cs b/B3SheepButcherManage/BO/Bill/FixedPrice/FixedPrice.cs
index 103a3a7..8ff85ad 100644
--- a/B3SheepButcherManage/BO/Bill/FixedPrice/FixedPrice.cs
+++ b/B3SheepButcherManage/BO/Bill/FixedPrice/FixedPrice.cs
@@ -1,6 +1,7 @@
 using BWP.B3Frameworks;
 using BWP.B3Frameworks.Attributes;
 using BWP.B3Frameworks.BO;
+using BWP.B3SheepButcherManage.BL;
 using Forks.EnterpriseServices;
 using Forks.EnterpriseServices.DataForm;
 using Forks.EnterpriseServices.DomainObjects2;
@@ -16,6 +17,7 @@ namespace BWP.B3SheepButcherManage.BO
   [Serializable, DFClass]
   [DmoTypeID(B3FrameworksConsts.DmoTypeIDBases.B3SheepButcherManage, B3SheepButcherManageConsts.DmoTypeIDOffsets.FixedPrice)]
   [EditUrl("~/B3SheepButcherManage/Bills/FixedPrice_/FixedPriceEdit.aspx")]
+  [BLType(typeof(IFixedPriceBL))]
   public class FixedPrice : DepartmentWorkFlowBill
   {
     DateTime? dt = DateTime.Now;