diff --git a/csharp/App/SaliMax/src/SaliMaxRelays/IRelaysRecord.cs b/csharp/App/SaliMax/src/SaliMaxRelays/IRelaysRecord.cs
index 3e165b0ae..176277a49 100644
--- a/csharp/App/SaliMax/src/SaliMaxRelays/IRelaysRecord.cs
+++ b/csharp/App/SaliMax/src/SaliMaxRelays/IRelaysRecord.cs
@@ -9,6 +9,7 @@ public interface IRelaysRecord
     Boolean              FiWarning                         { get; }
     Boolean              FiError                           { get; }
     Boolean              K2ConnectIslandBusToGridBus       { get; set; }
+    Boolean              OldK2ConnectIslandBusToGridBus    { get; set; }
 
    // Boolean              Inverter1WagoRelay                { get; set; }  // to add in the future  
    // Boolean              Inverter2WagoRelay                { get; set; }  // to add in the future