[C#]OnGUI GUI.Button If Statement not working. (Please help)

I am trying to do some conditions in the void OnGUI() method and it is not working. When I define some if statements under GUI.Button, it does not work. When I click the button, nothing happens. The only thing that works is if I say Debug.Log("some text"); under the if statements. NOTHING else works. And by the way, GUI.RepeatedButton() will not work correctly. I tried to use it but it destroyed the GUI.Box that I am trying to create. Anyway, here is my code for the script.

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.IO;
4. using System;
5. using System.Runtime.Serialization.Formatters.Binary;
6.  
7. public class GameShopGUI : MonoBehaviour
8. {
9.     public MoneySaveLoad saveLoadSystem;
10.     public MoneyHolder moneyHold;
11.     public GUIText gameShopGUIText;
12.     void Start ()
13.     {
14.         saveLoadSystem.Load();
15.     }
16.  
17.     void Update ()
18.     {
19.         gameShopGUIText.text = "The Dumb Shop";
20.         gameShopGUIText.fontSize = 100;
21.         gameShopGUIText.pixelOffset = new Vector2(200, 285);
22.     }
23.  
24.     void OnGUI ()
25.     {
26.         if (GUI.Button(new Rect(150, 300, 150, 75), "Buy 10 Extra Dumb Bullets" + "\n" + "(10 Dumb Coins)"))
27.         {
28.             if (moneyHold.amountOfDumbCoins >= 15)
29.             {
30.                 saveLoadSystem.amountOfExtraDumbBullets += 10;
31.                 moneyHold.amountOfDumbCoins -= 10;
32.             }
33.             if (moneyHold.amountOfDumbCoins <= 14)
34.             {
35.                 moneyHold.dumbCoinsLow = true;
36.                 if (moneyHold.dumbCoinsLow == true)
37.                 {
38.                     GUI.Box(new Rect(10, 10, 50, 50), "test");
39.                 }
40.             }
41.         }
42.     }
43. }
44.  

Can someone please help me? This is REALLY annoying. I just want to make a shop system for my game and I cannot do it if I cannot get this to work!

 

WIth your code the GUI.Box is only drawn for a very, very short time because the code will only be executed once when you pressed the button. Draw the GuiBox outside of the button part.

 

No, this will not work because I need it to bring a pop box when you don't have enough money to purchase something. Like say it costs $10 and the player has $11, then it brings a box up that says "Thank You" and then it draws a button that says "Dismiss Message" or something similar(haven't added this yet though but planning on to) and then if the player doesn't have $10, then it brings up a box that says "You do not have enough money" and then it too draws a button that will say "Dismiss Message." If I draw it outside the button, it will always be there and I do not want that. I only want a button and box to appear if the moneyHold.dumbCoinsLow == true. Thanks for helping though because that would work but I don't need it to work in that way.

EDIT:
Never mind. I read that wrong and I see what you meant. At least I think I do. I did the check to see if the player had enough money and if he/she did, then it gave the power up and took away the money and made the boolean variables false. Then I did an else if statement saying it the player didn't have enough money, then made the boolean true. Then, outside the button, I said if the boolean == true, then draw a GUI.Box and a GUI.Button. And when the GUI.Button was clicked, then the boolean was made false and the box went away until the powerup button was clicked again. Thank you for helping Suddoha.