Hi, guys, I am beginner of Processing.  I am trying to figure out how the function createShape works. And it seems like the rectMode only has effect on the function rect(), or am I missing something? Below it's a small test I made, it shows exactly what i am talking about.

So can anybody tell me how to change the rectMode in createShape()? Thx alot!!!! 

PShape rect;

void setup() {
size(300, 300, P2D);
background(100);
rectMode(CENTER);
}

void draw() {

fill(0, 255, 255);
rect(150, 150, 140, 140);

fill(255, 255, 255);
rect = createShape(RECT, 150, 150, 140, 140);
shape(rect);
}