diff --git a/ceny_mieszkan.py b/ceny_mieszkan.py
index 13269f2..5e83604 100644
--- a/ceny_mieszkan.py
+++ b/ceny_mieszkan.py
@@ -1,7 +1,31 @@
 import tkinter.filedialog as filedialog
 import tkinter as tk
+from tkinter import ttk
+from tkinter import filedialog
+from price_evaluation import predict
+
+def predict_price():
+    try:
+        stan = input_entry5.get()
+        czynsz = float(input_entry3.get())
+        liczba_pokoi = int(input_entry2.get())
+        metraz = float(input_entry.get())
+        rynek = input_entry4.get()
+
+        price = predict(stan, czynsz, liczba_pokoi, metraz, rynek)
+
+        output_entry.configure(state='normal')
+        output_entry.delete(0, 'end')
+        output_entry.insert(0, str(price))
+        output_entry.configure(state='readonly')
+    except ValueError:
+        output_entry.configure(state='normal')
+        output_entry.delete(0, 'end')
+        output_entry.insert(0, "Invalid input")
+        output_entry.configure(state='readonly')
 
 master = tk.Tk()
+
 header_text = "Ceny mieszkań"
 header_label = tk.Label(master, text=header_text, font=("Arial", 25), anchor = "center", justify="center")
 header_label.pack(fill="both", expand=True, padx=20, pady=20)
@@ -43,15 +67,20 @@ input_path3 = tk.Label(middle_frame, text="Czynsz:")
 input_entry3 = tk.Entry(middle_frame, text="", width=40)
 
 input_path4 = tk.Label(middle_frame, text="Rynek:")
-input_entry4= tk.Entry(middle_frame, text="", width=40)
+input_entry4 = ttk.Combobox(middle_frame, values=["Pierwotny", "Wtórny", "Pierwotny i wtórny"], state="readonly", width=37)
+input_entry4.set("Wybierz")
 
 input_path5 = tk.Label(middle_frame, text="Stan:")
-input_entry5= tk.Entry(middle_frame, text="", width=40)
+input_entry5= ttk.Combobox(middle_frame, values=["Pod klucz", "Deweloperski", "Do wykończenia", "Do remontu"], state="readonly", width=37)
+input_entry5.set("Wybierz")
+
 
 begin_button = tk.Button(bottom_frame, text='Oblicz')
+begin_button.configure(command=predict_price)
 
 output_path = tk.Label(bottom_frame, text="Prognozowana cena:")
-output_entry = tk.Entry(bottom_frame, text="", width=40)
+output_entry = tk.Entry(bottom_frame, text="", width=40, state="readonly")
+output_entry.insert(0, "Your result goes here")
 
 line.pack(pady=4)
 top_frame.pack(side=tk.TOP)