Draw object from List

Question

Hello to everybody.

I'm facing a problem in my code. I have created a class called Obstacles and in my main code I created this function:

        public void o_value(Object o, EventArgs e) // Function to change bool and insert Object Obtacle

        {

            obstacle_pressed = true;

            obstacles.Add(new Obstacle(new Rectangle(300, 300, 30, 60),Content.Load<Texture2D>("Obstacles/default")));

        }
Then in my Draw function I do as followed:

                    if (obstacle_pressed == true)

                    {

                        foreach (Obstacle obstacle in obstacles)

                        {

                            obstacle.Draw(spriteBatch); // I have created a function Draw in Obstacles Class

                        }

                    }
But nothing is shown in my Game!
Could anyone please help?
Thanks