How to set data to a field?

I have a field declared like this:
let scalarField = ti.field(
          ti.types.vector(ti.types.vector(ti.f32, 2), 3),
         2
        );
basically this should hold data like this:
[
[[0,3], [4,5], [6,7]],
[[6,7], [8,9], [10,11]]
]
Am not sure how to populate this field. fromArray works for 1D f32/i32 values, but am not sure how to put this data into the field. 