[chimerax-users] Copy attribute value from one attribute to another

Hello, I have a question with a probably obvious answer but I cannot figure it out. Is there a command to copy an attribute value from one attribute to another, for example, seq_conservation to bfactor? The idea would be to save a pdb file with the conservation stored in bfactor (for sharing). In this case I guess there is the issue that one is an atom attribute and the other is residue attribute but one could assign all atoms of the residue the same value. Sorry in advance if I miss something obvious.