Index: trunk/FACT++/gui/MainWindow.cc
===================================================================
--- trunk/FACT++/gui/MainWindow.cc	(revision 12281)
+++ trunk/FACT++/gui/MainWindow.cc	(revision 12282)
@@ -108,4 +108,12 @@
 }
 
+void MainWindow::on_fNoutof4Val_valueChanged(int val)
+{
+    const uint32_t data[2] = { -1, val };
+
+    if (!fInHandler)
+        Dim::SendCommand("FTM_CONTROL/SET_N_OUT_OF_4", data);
+}
+
 void MainWindow::on_fRatesMin_valueChanged(int min)
 {
@@ -122,5 +130,4 @@
     Dim::SendCommand("DIS_DNS/KILL_SERVERS");
 }
-
 
 void MainWindow::on_fShutdownAll_clicked()
Index: trunk/FACT++/gui/MainWindow.h
===================================================================
--- trunk/FACT++/gui/MainWindow.h	(revision 12281)
+++ trunk/FACT++/gui/MainWindow.h	(revision 12282)
@@ -205,4 +205,6 @@
     virtual void on_fThresholdIdx_valueChanged(int) = 0;
 
+    void on_fNoutof4Val_valueChanged(int);
+
     void on_fRatesMin_valueChanged(int); // FIXME: Could be set as slot in the designer
     void on_fRatesMax_valueChanged(int); // FIXME: Could be set as slot in the designer