I want to get alert on stochatic crossover { stoch (5, 3, 3, 0) } for pi software

I WANT TO GET ALERT ON SINGLE INDICATOR WHEN %K IS CROSSED ABOVE OR BELOW %D

you can check the below stochastic crossover quesiton

http://tradingqna.com/13107/can-you-code-below-conditions?show=13107#q13107

I HAVE SEARCHED AND FOUND SO THANKS FOR THIS q & a
BUY CROSSOVER(SOPK(5,3,3, SIMPLE),SOPD(5,3,3, SIMPLE))
SELL CROSSOVER(SOPD(5,3,3, SIMPLE),SOPK(5,3,3, SIMPLE))