Wanting -trade- script

Hi,

I want a trade script as follows, the price has cut the psar rising from below the bolinger median and cutting psar above that median,similarly opposite condition too i.e. price falling from above the median and cutting psar below the median on time frame of 5m,10m,15m,30m,60m,90m,daily. this is for pi screener.

For the above condition

Buy Script:

CROSSOVER(BBB(CLOSE, 20, 2, EXPONENTIAL), PSAR(0.02, 0.2)) = TRUE

Sell Script:

CROSSOVER( PSAR(0.02, 0.2),BBB(CLOSE, 20, 2, EXPONENTIAL)) = TRUE

Thanx a lot Algo, BTW I didnt get any email alert of your response.