rational[0] = g_variant_new_uint64(devc->vdivs[i][0]);
rational[1] = g_variant_new_uint64(devc->vdivs[i][1]);
tuple = g_variant_new_tuple(rational, 2);
rational[0] = g_variant_new_uint64(devc->vdivs[i][0]);
rational[1] = g_variant_new_uint64(devc->vdivs[i][1]);
tuple = g_variant_new_tuple(rational, 2);