Vray self illumination

vray self illumination in vray material problem, i put a texture with black background but turn out wrong,
please help!

software: 3ds max 2014, vray 2.40.04

Probably want to override the gamma to 1 in this case on the texture map.

Thank you for your reply,
I have try gamma 1, the number has overexpose but the background still not black.

it does seem to match the color of your shader ball. What happens if you plug the same map into diffuse?

It look exactly the same as my texture if i plug it in the diffuse slot

here is how it look in diffuse slot

Looks right in this settings. But, the material you show here is not applied!

If you apply it and it still doesnt work, then use a VRayLightMtl instead

ok, thank you for your reply.