easy language question: plotting a showme one bar back

["john hamon" <jhamon@xxxxxxxxxxxxxxxxx>]

i have a showme which requires the following bar to determine that the bar
in question should be marked.  because i have to defer calculation to the
next bar, my showme plots at the next bar.  i really would it to plot at the
prior bar.

is there a way to do this in easy language?  thanks for your help!

john hamon

jhamon@xxxxxxxxxxxxxxxxx