Who of you or Which one of you

[innamuris]

I got this doubt while writing an email to my developers. Between two developers, I am not sure who has to make the changes. So I wanted to inform them - I am not sure who of you needs to do the change (is this correct?) or I am not sure which one of you needs to do the change...

which is correct of the two sentences above? Please help.

Thanks

 

[Rover_KE]

Welcome to the forums.:-D

'I am not sure which (one) of you needs to make the changes.'

The word in brackets is optional.

Rover