Added Positive LOWBB option where you can select 0 to 100 where 10 for example is 10% above the LOWBB line. I've made the Positive signals yellow just to differentiate between them.
NB: Either use the Positive or the Negative option. If you use for example Positive, ensure that negative is de-selected and negative value set to 0 and vice-versa.
So in summary, the negative option is for buy signals < the LOWBB line and the positive option is for buy signals > the LOWBB line. The negative option is more useful for downtrend protection.