Update app.py

app.py

@@ -70,6 +70,7 @@ def sort_doc(in_list,steps_in=0,control=None):
         last_key=list(lod.keys())[-1]
         print(last_key)
         for ea_dig in last_key:
+            ea_dig=int(ea_dig)
             print(f'{ea_dig} :: {control_json["control"][ea_dig]}')
             step_cont_box.append(control_json["control"][ea_dig])
     else: