[phenixbb] specifying column labels for input MTZ file

Hi, I am trying to run phenix.refine with a sharp output MTZ file (column labels H K L NUMORB FB PHIB FOM HX HY FH PHIH FP SIGFP HLA HLB HLC HLD HL0 Fcent PHIcent FOMcent Fmap PHImap FHref PHIHref Fav SIGFav). Phenix.refine stopped at 'Multiple equally suitable arrays of observed xray data found. Possible choices: sharp_sad_se_eden.mtz:FP,SIGFP sharp_sad_se_eden.mtz:Fav,SIGFav Please use refinement.input.xray_data.labels' Can someone tell me on how to use this 'refinement.input.xray_data.labels' and how to specify which column labels to use. There is nothing written in the documentation about it. Thanks Tirumal