better way to do this using math

[EarlyBird2]

retry

        if val < 6  AND Menu_Select = 211 then   lookup val,[1,2,4,8,16,32],val 
        if val =>6  and val <= 11 and Menu_Select = 2112 then  lookup val-6,[1,2,4,8,16,32],val
        if val =>12 and Menu_Select = 2113 then lookup val-12,[1,2,4,8,16,32],val

Obviously I do not know how this code fits into your main program but here is an idea that could be of use.

WHILE val > 5
val = val - 6
wend

val = 1 << val

I am not sure about this line "val = 1 << val " just try it is all I can suggest.