I think it would be easier for you to create boolean triggers based on the specific variables that make up your Line.
Then, you would have true or false...long or short.....triggers....and you can get rid of the word line entirely.
Keep it simple.
I hope that helps.

Hello. I wonder what is the syntax to open and close a short position? For example, on SPY if the RSI drops below 20 (open) and if the RSI crosses above 80 (close). For some reason, I can successfully code a long position and see open and close (on the chart) but I'm unable to do that for a short po...