So, I figured out how to get scientific notation. Here's the example:
\b5\BER:\p0g\Low Warning: \u7m\$LowBERWarning \p0\(${chartable: "%1.1e" : $LowBERWarning/100000000000})\p0\
While I had to divide my value by a hundred billion to get the expression to display what I wanted, the thing I haven't figured out yet is how to apply a format without making it chartable. I want my defined color, but since it's chartable, it's blue anyway.