[phenixbb] Option to select array from mtz in phenix.real_space_refine?

Hi, I find phenix.real_space refine very effective for initial refinement of a model against a density modified map after molecular replacement (with morphing and reference restraints etc enabled). However, when I do this it seems like if there is more than one array of map coefficients in the file there is no way to select which columns to use, unlike for phenix.refine - would it be possible to add such an option? Currently I just use cad in ccp4 to make a file with the desired columns, but it would be a smoother process if the desired column labels could be specified directly at run time. Cheers Oli