[Chimera-users] Selecting multiple residues in one chain

HI all, I want to select and color multiple residues in one chain. When I use select #1: 15, 18, 20 .B It select 15, 18 and 20 in all the chains. But when I use select #1: 15.B, 18.B, 20.B It select 15, 18 and 20 in chain B. Is there another way to select residues in one chain without adding .B after each one? It makes the script much bigger and less clean. Yehuda