EL Question

[janderson3.at.CSOMSTUDENkkkkkkkkkkkkkk (janderson3)]

     Hello,
     
     I am having some difficulty writing a ShowMe study in EL, and was 
     wondering if any of you resident EL wizards could help?  I think the 
     answer is probably simple, but I have been unable to find it in any 
     documentation.
     
     I would like to write a ShowMe study that marks the bar which is 'x" 
     bars ago.  For instance, I trade a breakout system, which trades based 
     on a breakout of the 'x' bar high or low.  Is there any way to mark 
     this bar (perhaps a Paintbar would work?), just so that I have a quick 
     visual indication of where the bar which is 'x' bars back begins on my 
     charts?
     
     Thanks in advance for any of your help,
     Jay Anderson