diff --git a/IOB-WIN-NEXT/IobSiemens.cs b/IOB-WIN-NEXT/IobSiemens.cs
index 054026e7..9c05f668 100644
--- a/IOB-WIN-NEXT/IobSiemens.cs
+++ b/IOB-WIN-NEXT/IobSiemens.cs
@@ -501,6 +501,7 @@ namespace IOB_WIN_NEXT
                                 if (fatto)
                                 {
                                     item.value = item.reqValue;
+                                    item.reqValue = "";
                                 }
                                 // se configurato faccio verifica write...
                                 if (getOptPar("WRITE_CHECK") == "TRUE")