Still not right. Try with code=rich:
let PinsB = %11000000 'B.4,B.5 Energised B.7,B.6?
pause w2
let PinsB = %01000000 'B.5 Energised B.6?
pause w2
let PinsB = %01100000 'B.5,B.6 Energised
pause w2
let PinsB = %00100000 'B.6 Energised B.5?
pause w2
let PinsB = %00110000 'B.6,B.7...