PSAR above BB

Kindly provide code for when PSAR crosses over BB Top band or BB bottom band. i.e opens outside of the BB band.

For the above given condition

Buy script

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

Sell script:

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