imagestudio question

Hi guys, I have a question concerning decals in imagestudio. I am trying to place a logo on a product wihtout the white rectangular background that surrounds the logo. I understand the decal image requires manipulation in a photo editing package and perhaps a particular image format type before it can be used successfully without the background in imagestudio.

I have tried removing the image background layer altogether(leaving that photoshop checkered background) and exporting as .tiff and it still did not work. I have tried adjusting the decal controls in imagestudio to match the decal background in imagestudio, that does not work either…

Could somebody please tell me what is the best image format and image manipulation procedure (in photoshop) for preparing image decals that will not show the background in imagestudio ?? (alpha layers…?)

Thanks in advance

i found a way…

vectorised the logo → projected the vector logo on to the model surface in 3d proggy and made each part of the new projected logo a surface
…and i’m spent…