animations not change when OnGUI button click in unity3d Vuforia?

Hi everyone,

Please help me for this issue,The problem is animations are not changing when am I clicking OnGUI Button in vuforia ontrackingevents.

I am working in vuforia unity3d…

system configuration:
unity3d 4.3.3
vuforia latest version

I need to do when am clicking OnGUI button the required animation should be play.Its working well in unity editor but it was not playing on android device.

I stuck with this issue from last four days itself…

Calum.McManus Thanks for this answer you help me so much, really thanks man, really really thanks.