Need Custom Indicator Help

["John Kosar" <jk@xxxxxxxxxxxxx>]

I posed this question to the list the other day but I'm not sure if the
email made it, so I'm trying again.

Can anyone help me with the proper "language" to construct a custom
indicator that will plot the difference between the answers of 2 subtraction
problems? I have MS 6.52.

Here's an example of what I want to do:

The difference between (O-H) and (L-C)

where the answer to the problem within each parenthesis could be a positive
or negative number.

Suppose           (O-H) and (L-C)
was                   (5-9) and (6-4)
which would be  (-4)  and  (2)
the difference between them would be 6. This is what I'm trying to plot.

The plotted figure could never be less than zero, which would only be if
both values within the parenthesis were the same.

Can anyone help me with this?

Thanks.

John
jk@xxxxxxxxxxxxx