[phenixbb] selectively remove bond length restraints on atoms

hello, What is the best way to selectively remove bond length restraints on some selected atoms for phenix.refine? i found the commands for a .param file: refinement { geometry_restraints.remove { angles = None dihedrals = None chiralities = None planarities = None } } but no bond length command in the manual online. http://www.phenix-online.org/version_docs/dev-283/refinement.htm otherwise there is the commands refinement { geometry_restraints.edit { bond { action= *delete change atom_selection_1= (selection1 here) atom_selection_2= (selection2 here) distance_ideal= None } } } is it a good way to deal with the problem ? thanks in advance for your help. Maxime