Volume Weighted Moving Average

["Larry M. Powell" <larypowell@xxxx>]

I would like to be able to plot the following on the price chart, I have
tried sever method of "plot" but does not seem to work. 
Thanks,
/* The Volume
Weighted Moving Average calculates the sum of the volume times the data
field for each day in the average, then divides this value by the sum of
the volumes in that period. */
Graph0 =
Sum((Volume*Close),10)/Sum
(Volume,10);

Larry M. Powell
LM Powell Development Co
714-299-7002
702-768-6090