[ovirt-users] Cannot "Change CD" from VM portal with standard user

Hello, I am trying to attach a CD to a virtual machine from the VM Portal as a standard user. When I click on the box for choosing the ISO image, I only get "[Empty]". However, when I access the VM portal as an admin, I correctly see the list of ISO images. I suspect it is a problem of permission: I have assigned to the unprivileged user the UserRole permission both for the VM and the ISO disk images. Am I doing something wrong ? Do I need to assign different roles ? Thanks, --gianluca