Traderfeed money flow intraday

[halo972]

I'm trying to make this efs and would appreciate some help from more experienced efs programmers.

It's a simple concept:
volume traded at ask is added to running volume and volume traded at bid is subtracted from that running total.

Here is an explanation of the indicator:

http://traderfeed.blogspot.sg/2007/05/daytrading-stocks-with-money-flow.html

Here is the pseudo code:

var moneyflow
task = getmostrecentask
tbid = getmostrecentbid
tlast = getmostrecenttradeprice
tvol = getmostrecenttradevolume

if tlast == task
moneyflow + tvol
if last == tbid
moneyflow - tvol
else moneyflow

moneyflow should be a running total
and be displayed above price on the chart.

Thank you.