cl_nv_d3d10_sharing extension and multi device context

I am writing a feature uses ‘cl_nv_d3d10_sharing’ extension. i am using driver 196.75 although is was recalled since it is the first and currently the only driver to support the extension.
I am creating two d3d10 devices and would like to create an openCL context that is associated with both of them.
when i call ‘clCreateContext’ with more than one ‘CL_CONTEXT_D3D10_DEVICE_NV’ attribute at the parameter the context creation fails.

does anyone knows if it is possible to create an OpenCL context which is associated with more than one d3d device ?