Calling an indicator from another chart

Good morning,

I'm working on an ETF mean reversion signal in Powerlanguage using daily bars. Basically, I'd like to buy SLV when it's oversold (RSI(2) < 10 for example) AND the S&P 500 (or XLY) is above the 200d moving average. Is there a simple way to code this without calling a separate data series for SPY?

Pattern1 = C > Average(C,200) <-- buying SLV, but I want to buy only when SPY > 200d moving average

Thank you, Shawn

I don't know of a simpler way than adding SPY as Data 2 and creating the SMA.

viewtopic.php?t=6929#p35429

Something like:

You might try using global variables, that should work.