SRAM Apex right shifter problems
 

Hello,

I am having issues with my apex right shifter. I was shifting gears today when it broke and will no longer shift up in gears. I say up because I was on a middle cog and when i used it it continued to shift down. Is it junk now or can i just buy a new shifter assembly? i was thinking this: Amazon.com : SRAM Rival Apex DoubleTap Right Shift Lever Assembly : Bike Shift Levers : Sports & Outdoors

Cheers,
Dos