Calculating the High and Low of it all

[SMcNeill]

HL = DataBaseValue
        If HL < Low Then Low = (_Round(HL * 100000)) / 100000
        If HL > High Then High = (_Round(HL * 100000)) / 100000


And *before* your DO-LOOP where you check those values, initialize the high/low variables.

LOW = *max variable value*
HIGH = *min variable value*

So for an unsigned byte, LOW = 255: HIGH = 0.  For an unsigned integer, LOW = 65535: HIGH = 0.

This way *any* database value will be less than LOW, setting it to the database limit, while the same is true with the HIGH.