diff --git a/TTdiag.m b/TTdiag.m
index 727496b89d8f2e8f2506c914548082a51ec31134..ceb6eda554ebd389fc6a8fc87e5f9732624d0fa6 100644
--- a/TTdiag.m
+++ b/TTdiag.m
@@ -40,8 +40,7 @@ switch Action,
         file = varargin{2};
         try
             data = importdata(file);
-            gui = GUI([],0);
-            gui.setData(data);
+            gui = GUI(data, [],0);
             gui.init();
         catch exception
             msgbox(exception.identifier);
@@ -126,12 +125,11 @@ else
     
 end
 if mode == 1
-    gui = GUI(blockHandleTTTopMask,1);
+    gui = GUI(data, blockHandleTTTopMask,1);
 elseif mode == 0
-    gui = GUI([],0);
+    gui = GUI(data, [],0);
 end
 
-gui.setData(data);
 gui.init();
 if(mode == 1)
     set_param(blockHandleTTTopMask,'UserData',data);