With the kind help of others, I have manged to generate the attached HMA crossover strategy (it actually uses the slope of the HMA to emulate the crossover), to which I would now like to add a simple longer term, back-testable EMA condition "Longs only when Price > EMA / Shorts only when Price < EMA.
Whilst this is straightforward to do in the Strategy Builder, having compiled the strat, I cannot of course reopen it within the Strat Builder to add the condition & my coding grammar is insufficient to put the code in EXACTLY the right place with the correct punctuation. Would some kind soul please show me where & how to do this in the NinjaScript Editor?

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