Need help with system test rules

[Otto <ojshrink@xxxxxxxxxxxxxx>]

I need your help with something I don't seem to be able to figure out.

My neural network created an output, called SIGNAL1.  I used Downloader to
convert the ASCII file of the daily signal level into Metastock format.  I
opened a chart of the S & P futures contract, and then opened the SIGNAL1
line chart and dropped it onto the title bar.

I now want to create a system test with the simple rule:  if SIGNAL1 > 0
then go long, if SIGNAL1 < 0 then go short.  I do not know how to refer to
SIGNAL1 in the formulas for the entry and exit rules.  

Any help??