Challenge: smarter button

hello i cannot find out why my java script isn't working for Challenge: smarter button  

draw = function() {
fill(0, 255, 68); // start color

if (mouseIsPressed && mouseX < 50 && mouseX<300 && mouseY>150 && mouseY<250) {
fill(33, 112, 52); // click color
}
rect(50, 150, 250, 100); // the button

// The button text
fill(0, 0, 0);
textSize(30);
text("PRESS ME!", 93, 193);
};