Decrease size of waveforms in MixEditor

So I have the MixEditor up on my main screen. I find the waveforms are a bit too large so I’d like to change their sizes. I have tried adding the WaveformHeight option to the MixEditor section of the skin.ini bu that doesn’t seem to work. I can use a little help here.

[MixEditor]
Waveform0InactiveColor=#000000
Waveform1InactiveColor=#00CC00
Waveform1InactiveColor=#ff6600
Waveform1InactiveColor=#0099ff
WaveformHeight=3