Remap button MENU to APP SWITCH like s5 topic

My device is S4
Rom 5.0.1 TW OB7
I want to remap menu button to app switch by edit system > usr > key layout > generic.kl
Replace "Key 139 Menu" to "key 139 APP_SWITCH WAKE_DROPPED".
But it not working.
SO, What i can remap menu button?
Thank for help!!!!!!!!!!

xda-developers