E and j directions in calculating anomalous Hall conductivity

Dear WT development team,

First of all, let me thank you for creating such a useful program and making it available for us.

I am now trying to calculate anomalous Hall conductivity σ_xy for several different choices of x (// current) and y (// electric field) for the same system. My question is how does WT determine x and y? Are they determined from the lattice vector settings?   Is there any way I can change x,y within WT (I mean, without going back to the ab initio calculation to regenerate the Wannier hamiltonian)?  Does KCUBE_BULK affect x and y?

Thank you in advance.

Tak