(Solved) Splitting the screen with sf::View

[Power]

Hello,
The non spiltted window shows as this :


The entity that is drawn is the grid, it is a rectangur shape called RS, you will see it mentioned at the end of post.

I try to split the screen in half by having 2 views in the same window like this  (view3b is the main view)

if(event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::D) // Double view
                  {
                                    sf::View view3bSave=view3b; // i save a copy of the main view)
                                   //   player 1 (left side of the screen)
                                    view3b.setViewport(sf::FloatRect(0.f, 0.f, 0.5f, 1.f));
                                    window.setView(view3b);
                                    // player 2 (right side of the screen)
                                    view3bSave.setViewport(sf::FloatRect(0.5f, 0.f, 0.5f, 1.f));
                                    window.setView(view3bSave);
                  }
 

And i get only the right part :


Then i read this post : https://en.sfml-dev.org/forums/index.php?topic=11526.0
Where it is expalained the "window.draw(world);" has to be done following each "setView".
I tried to draw the rectangular shape (the grid) RD, as following.

                  if(event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::D) // Double view
                  {
                                    sf::View view3bSave=view3b;
                                   //   player 1 (left side of the screen)
                                    view3b.setViewport(sf::FloatRect(0.f, 0.f, 0.5f, 1.f));
                                    window.setView(view3b);
                                    window.draw(RS);
                                    // player 2 (right side of the screen)
                                    view3bSave.setViewport(sf::FloatRect(0.5f, 0.f, 0.5f, 1.f));
                                    window.setView(view3bSave);
                                    window.draw(RS);

                  }

It did not work ! By the way here is the declaration of the main View :

sf::View view3b;
    view3b.reset(sf::FloatRect(0.f, 0.f, 800.f, 800.f));

// its the size of the window.
What am i missing?

[Power]

Found the solution !   
The draw function had to be written after the clear function, so i took them outside the "window.pollEvent" thing, and it worked

window.clear(sf::Color::White);


                                    window.setView(view3b);
                                    window.draw(RS);
                                    window.setView(view3bSave);
                                    window.draw(RS);



        window.display();