-ago in Multipass

here's my command

DivX264 -br 2000 -ago 2 -npass 1 -ref 4 -bf 3 -bref -sf "b1.dat" -i "b1.avs" -o "b1.264"

i use -ago 2 in Multipass but..

Error: unknown argument -ago

the command -ago can't use with multipass? or it use ago 2 by default. If i don' use command such as -ref 4 -bf 3 and etc.. output will be DivX HD profile or I need to use more software or command?

thank you and sorry my bad English.

The argument should be aqo,

The argument should be aqo, as in a lower-case "Q".

Hope that helps!