[Chimera-users] Select by attribute value in a .psf file

Hello Chimera users, I am trying to see the movement of some phospholipids in a lipid bilayer when a peptide is anchoring to this membrane. I have a .pdb, .psf and several .dcd files. When I select one of these phospholipids I obtain four molecules selected (with the same name due to the segments). I have been trying with ’Select by attribute value’/atoms/pdbSegment and it works perfect because this way I can specify the segment where it is. But I can’t find the way to do the same with the .psf file. Could you tell me how should I do it?. Thank you very much, clara