diff --git a/NassiShneidermann.py b/NassiShneidermann.py
index a5f3d67..82f29a8 100644
--- a/NassiShneidermann.py
+++ b/NassiShneidermann.py
@@ -50,10 +50,14 @@ class NassiShneidermanDiagram:
         for line in filtered_lines:
             if line.startswith("while("):
 
+def nassi(NSD):
+
+    NSD.load_from_file("res/input/input.java")
+
+    NSD.convert_to_image("Nina", 500)
     
 if __name__ == "__main__":
     """for debugging"""
-
     from Iinstruction import *
 
     NSD = NassiShneidermanDiagram(True)
diff --git a/gui.py b/gui.py
index 90b14af..76c93dd 100644
--- a/gui.py
+++ b/gui.py
@@ -1,4 +1,6 @@
 
+from NassiShneidermann import NassiShneidermanDiagram, nassi
+
 import PySimpleGUI as sg
 import os.path
 
@@ -95,8 +97,13 @@ while True:
             filename = os.path.join(
                 values["-JAVA FOLDER-"], values["-JAVA FILE LIST-"][0]
             )
-            
+
             window["-TOUT-"].update(filename)
+
+            from Iinstruction import *
+            NSD = NassiShneidermanDiagram(True)
+            nassi(NSD)
+
         except:
             pass