diff --git a/lib/CreoMigrateGui.py b/lib/CreoMigrateGui.py
index f9d194a..ada34c3 100644
--- a/lib/CreoMigrateGui.py
+++ b/lib/CreoMigrateGui.py
@@ -4,9 +4,11 @@ import tkinter as tk
 from gui import App
 from caditem import CadItem
 from controller import Controller, GuiLogic
-from manage_configs import Configs
+from manage_configs import Configs, SivasAssemblyData
 import argparse
 import os
+from get_teilestamm import FetchSivasTeilestamm
+
 
 demo_data = """
 {
@@ -108,6 +110,7 @@ if __name__ == '__main__':
 
     environment = Environment()
     output_dir = environment.out_dir
+    data_dir = environment.data_dir
     configs = Configs(environment.cfg_dir)
     configs.set_env(environment)
 
@@ -117,11 +120,27 @@ if __name__ == '__main__':
         build_gui(model, configs)
 
     elif args.sivasid:
-        id = args.sivasid
-        path = os.path.join(output_dir, id + '.json')
-        if os.path.exist(path):
+        sivasid = args.sivasid.strip()
+        filename = sivasid + '.json'
+
+        assembl_path = os.path.join(output_dir, filename)
+        if os.path.exists(assembl_path):
+            # wenn schon einmal das assembly als json abgespeichert wurde, dann dieses laden
             model.load(demo_data)
-        build_gui(model, configs)
+        else:
+            # ansonsten sich die Einzelteile als .csv und den Aufbau des Assemblies als .json holen   
+            sivas_teilestamm = FetchSivasTeilestamm(sivasid, data_dir)
+            sivas_teilestamm.get_unmigrated_teilstamm_csvs()
+            redids = sivas_teilestamm.get_red_ids()
+            sad = SivasAssemblyData(data_dir, filename)
+            parent_children = sad.get_parent_children()
+
+            model.set_red_ids(redids)
+            model.set_parent_children(parent_children)
+            model.set_asm_id(sivasid)
+            
+            # dann die Gui damit aufbauen 
+            build_gui(model, configs)
     else:
         parser.print_help()