Render Separetaly Objects with reflections,refractions ands shadows in V-Ray

[xrysa]

Hello ,
i have a problem with rendering my objects in v-ray .
i 'm trying to render seperately every element of my scene - bottle of parfum, particles, flowers, sheet as backround, to composite them afterwords in A.E.
The result of my render with all of my elements has nothing to do with the result of my bottle of parfum and the flowers separately.They become darker and i can't figure out the solution.
The reflections and refractions aren't also the same.
For the environment map i put a gradient on.

Please i need your help
Thank you for reading my thread

[DiogoM]

you can render these passes:

vray_refractions
vray_reflections
vray_specular
vray_totallighting

put it all in layers with screen mode

hope this helped

[xrysa]

Thanks Diogo
i'll try as soon as possible
and i'll let you know!
Thank you very much