Chart Cummulative (BidSize-AskSize)

[strongas]

I have noticed that you guys have done alot of Volume based studies. I am trying to search this forum to see if a stufy exists that plots a line chart based on cummulative BidSize MINUS AskSize.

I tried to do this in the formula wizard but had no luck.

I basically want to keep a cummulative LINE indicator of (BidSize - AskSize)

Actually it would be nice to have 2 indicators. One that cummulates just Intraday- and the other that does a running history cummulation of the (BidSize - AskSize)

So we may have an intraday series of BidSize / AskSize like below:

BidSize131x456AskSize (-325) [plot -325]
BidSize131x461AskSize (-330) [plot -655]
BidSize131x460AskSize (-329) [plot -984]
BidSize131x461AskSize (-330) [plot -1314]
BidSize181x461AskSize (-330) [plot -1644]
BidSize500x200AskSize (+300) [plot -1344]
BidSize950x462AskSize (+488) [plot -856]
BidSize183x460AskSize (-330) [plot -1186]BidSize423x58AskSize (+365) [plot -821]
BidSize183x459AskSize (-328) [plot -1149]
BidSize187x463AskSize (-332) [plot -1481]

The intraday BidSize-AskSize indicator would reset the next day.
The longer term BidSize-AskSize indicator would keep adding and subtracting indefinitely.

If these indicators exist, are they posted on the board somewhere? If not, how can I go about creating them?

Thanks