I have tried the virtual key codes, I have tried single quotes, I have tried double quotes (I even tried no quotes).

IsKeyPressed("A");
IsKeyPressed('A');
IsKeyPressed("a");
IsKeyPressed('A');
IsKeyPressed("A");
IsKeyPressed("41");
IsKeyPressed(41);
IsKeyPressed("VK_BACK"); #backspace key
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I litterly cannot get any key on the keyboard to work except the ESC key. Is anyone else having this problem with my code? or is it just a configuration issue on my PC?