Chord names

[address@hidden]

Good morning. How do you create a chord name that's a minor sus?

Example:
\version "2.16.2"
chordNames = \chordmode {
  \global
  e4.:m e:m/d a:m a:m d d:7 g2.

I want the first a:m chord to be an a-minor sus. How do I make that happen? 
"a:m:sus" and "a:msus" and "a:m/sus" don't work. 

Will this solution also work with the Frets feature?

Thanks!
Jerry Starks
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Practice random acts of intelligence, and senseless acts of self-control.