eTrex Legend HCx: how many letters can I use to name a Waypoint?

[Wyo]

For example - on BaseCamp, I have a waypoint named: C - Willwood Canal 

but when I transfer waypoints to my Legend HCx, it's named:  C - Willwood C

From best I can tell, the HCx only will recognized 14 letters (this includes spaces).

Is there a method in which I can set the HCx to accept more letters? I've combed the manual up and down but can't find a way to do this.

THNX!