[phenixbb] Refinement and glycosylation.

Hi everyone, I refined my structure using phenix.refine and used the following parameters to define the ASN-NAG link: refinement.pdb_interpretation.apply_cif_link { data_link = NAG-ASN residue_selection_1 = chain A and resname NAG and resseq x residue_selection_2 = chain A and resname ASN and resseq y } However I would like the glycosylation to be Beta (NAG in Beta configuration). How can I define this in the parameter file? Thanks,