diff --git a/Simulator.cpp b/Simulator.cpp
index af9de39..f9ceaa3 100644
--- a/Simulator.cpp
+++ b/Simulator.cpp
@@ -101,7 +101,7 @@ Simulator::Start( bool bFirst)
 
   // Arrivo alla preparazione per la prima lavorazione
    int nStatus ;
-   return FindAndManageOperationStart( bFirst, nStatus) ;
+   return FindAndManageOperationStart( true, bFirst, nStatus) ;
 }
 
 //----------------------------------------------------------------------------
@@ -141,7 +141,7 @@ Simulator::Move( int& nStatus)
       if ( ! ManageOperationEnd( nStatus))
          return false ;
      // ricerca e gestione nuova operazione
-      if ( ! FindAndManageOperationStart( false, nStatus))
+      if ( ! FindAndManageOperationStart( false, false, nStatus))
          return false ;
      // se non ce ne sono altre, sono alla fine
       if ( m_nOpId == GDB_ID_NULL) {
@@ -433,10 +433,13 @@ Simulator::ResetAuxAxes( void)
 
 //----------------------------------------------------------------------------
 bool
-Simulator::FindAndManageOperationStart( bool bFirst, int& nStatus)
+Simulator::FindAndManageOperationStart( bool bStart, bool bFirst, int& nStatus)
 {
+  // verifico parametri
+   if ( ! bStart)
+      bFirst = false ;
   // recupero la nuova operazione
-   if ( bFirst) {
+   if ( bStart) {
       m_nOpId = m_pMchMgr->GetFirstActiveOperation() ;
       m_nOpInd = 0 ;
    }
diff --git a/Simulator.h b/Simulator.h
index 6dad563..9936427 100644
--- a/Simulator.h
+++ b/Simulator.h
@@ -44,7 +44,7 @@ class Simulator
       bool ResetAuxAxes( void) ;
 
    private :
-      bool FindAndManageOperationStart( bool bFirst, int& nStatus) ;
+      bool FindAndManageOperationStart( bool bStart, bool bFirst, int& nStatus) ;
       bool ManageOperationEnd( int& nStatus) ;
       bool FindAndManagePathStart( int& nStatus) ;
       bool ManagePathEnd( int& nStatus) ;