Need help drawing Rectangles

 

I am new to MQL. Please help.

Just trying to draw 5 horizontal rectangles stuck to left side of the chart windoiw. However everytime I get an error saying Object already exists (Err 4200).
Can you please send me a sample source code that works or point me to somewhere where I can find working code? Please note that I do NOT want to draw rectangles in relation to time and price. I want those fixed in the window with reference to the left top corner.

Thanks in advance.

ForexWatchman