Why wont this custom bbx pid show different percisions?

trying to convert ACHPRS into voltage, any while the math adds up and it does convert it wont show any precision numbers. Example: If its reading 4.245 Volts it will only show 4 no matter how many digits are in the precision box. Is it my math thats pissing it off or a bug?

Thanks,
Kyle

Attachment 20391

You have to give it a caption.

And Units "volts" may be too big... try "V" instead.