I have a simple problem...

I am on 10 minute chart, and want to draw lines of ANY PERIOD (i.e. PERIOD_H2, or PERIOD_H4 or etc.. ) high/low lines...

Finally, i have found the solution here... I needed to use iBarShift function:
example pivot indicator

(so,i.e.

Quoting 

ii = iBarShift(NULL, TargetPeriod, iTime(NULL,0,i))+1; bHIGH =(iHigh(NULL,TargetPeriod,ii));