AFL for read the Bolinger Lower and Higher band values

Hi,
Anyone please help me to read the Bolinger Lower and Higher band values in AFL code for the current bar and previous bar? Thank you

Just plot them and click on the bar that you want the value for.

Plot(BBandTop(C,15), "BBandTop", color);
Plot(BBandBot(C,!5), "BBandBot", color);

Thanks for reply. But I need those values in code to calculate other values. Any thoughts?

Period = 20;
Deviation =2.0;

UpperBandCurrentBar = BBandTop(C,Period, Deviation);
LowerBandCurrentBar = BBandBot(C,Period, Deviation);


UpperBandPreviousBar = Ref(UpperBandCurrentBar, -1);
LowerBandPreviousBar = Ref(LowerBandCurrentBar, -1);

Thanks much. it is working fine