Zorro is a great program and looking fordward to getting some good results from it when I understand it better.
When the 'if' comparison is true it executes the command but when the 'if' comparison is false it sets the values to "0".
Example:
if(crossOver(Fast,Slow)) BuyStop = 1.4;
Whhen crossOver occurs BuyStop is set to 1.4 as expected. On the next bar when new data arrives and this 'if' evaluates false the BuyStop is changed to 0. I expected it to stay at 1.4 since this 'if' comparison is false. What changed it and how do I keep the BuyStop value at 1.4 until this logic changes it at the next crossOver.

In your example, BuyStop just keeps its value when the 'if' condition is not true.

In a programming language, variables do not "change to 0" by themselves. When you define a variable, it gets an initial value. It is normally 0 if you have not defined it otherwise. The variable keeps this value until you explicitly set it to something else. So when you defined your variable just before that 'if' line, it stays 0 of course when the 'if' condition is not true.

You put me on the right track. The BuyStop changes to '0' because the variable is reset to '0' every the function is called. I added the word static infront of the var like this:

static var BuyStop;

This fixed the problem of variable resetting to 0. Thanks for the help.

Joe