Indicator to Draw Extended Rectangular in TF15

hi,

Anyone can guide me how to make indicator that draw extended rectangular in TF15.. minutes
e.g.

high/ low of the 1st candle in TF15 minutes

at 0.00 , 4:00 , 8:00, 12:00, 16:00 ,20:00

act as top / bottom new rectangular..

and each rectangular will be extended b4 the next rectangular.. as shown in the attachment..

Thanks!

You can adapt the indicator in this thread:

Daily Boxes/Lines indicator

http://www.forexfactory.com/showthread.php?t=256848

thanks for the link !