Theory :

The original was posted here : RSI Slope Divergence. This version is extended in a couple of things :

• possible channels background color is added. to avoid drawing channel back color, simply set the color to none (see second example)
  
• multi time frame support added. apart from the standard time frames supported by the metatrader 5, you have 3 "special" time frames :
• next higher time frame (first time frame higher than the current  chart time frame)
• second higher time frame (second time frame higher than the current  chart time frame)
• third higher time frame (third time frame higher than the current  chart time frame)