[phenixbb] Changing the resolution cutoff for water picking

Hi, I'm refining a 2.88 resolution structure and would like to pick waters. I assume the default low_resolution is set to 2.8 Angstroms and so my lower resolution map is not yielding any waters. How do I change the resolution cutoff for water picking to be 3.0 Angstroms? I tried adding "refinement.ordered_solvent.low_resolution=3.0" to my command line arguments and phenix is reading this, but the refinement crashes about 15 seconds in with the message: ================== Extract refinement strategy and selections ================= Sorry: Selection string 'water' results in empty selection (selects no atoms). Thanks for your help! -Sam