Probably stupid question: How do I set the standard alarm to be just vibrating?

Whatever I try, the standard alarm (clock -> alarm) always plays the preset music file =/
Is there any way to have a vibrate only alarm?

I also tried it with a "mute" mp3 file, but now I dont even get an alarm o.O
(Using the multilingual 0.9.9.8 fw).

Does nobody know an answer? =/

i try everything , its nothing gone . Only with Music .

still on M8 guys?
try to use that one: http://tinyurl.com/cslx6hc

Sold it to my GFs sister, ... and now she wants to know how to set a "vibrate only" alarm :P

Maybe she wants to use it for something else? I've searched on Chinese websites and there isn't something like a third-party app which allows this kind of operation.