Can any one help me to code for the below statergy, please

Algos, strategies, code
1

I want alerts (buy and sell both) at the opening of the current candle if the stochastic crossover happened at the close of the previous candle.

2

If you want to set the alert at the crossover, then,

BUY,

SET A= Ref(close,1)
SET B = SOPK(9, 3, 9, SIMPLE) OR SOPD(9, 3, 9, SIMPLE)
CROSSOVER(A,B)

SELL,

SET A= Ref(close,1)
SET B = SOPK(9, 3, 9, SIMPLE) OR SOPD(9, 3, 9, SIMPLE)
CROSSOVER(B,A)