[Chimera-users] how to save molmap by command line

Dear list I would use in programmatic way chimera to elaborate a molmap of a peptide bound in a receptor. I'm able to load the pdb and elaborate the molmap of the peptide "/home/guido/.local/UCSF-Chimera64-1.16/bin/chimera --nogui load <NAMEFILE> molmap :.P 5;" Now I would save the molmap of the peptide to do a fitmap vs another peptide. I tried save test.mrc but the following msg is prompted to me Volume data sets molmap <namefile>.pdb res 5 were not saved in the session. To have them included in the session they must be saved in separate volume files before the session is saved. DO you have any tips? Thank you Guido