Input referred noise current through pnoise

Hi!

I set a pnoise analysis to measure the input referred noise current of a lock-in amplifier. I used the pnoise analysis because one of the blocks that constitutes the lock-in is a Gilbert-cell mixer.

In the pnoise analysis, I set the Input Source to current in the drop down box and selected my current source at the input of the circuit, but I am only able to plot the result in V/sqrt(Hz), while I desired to plot the result in A/sqrt(Hz). Am I missing something?

The setup is attached.

Thanks!