Does the "f=X" working in the 2014-06-30 Version?

"pass" : "d=XXX;f0=0;f2=0;f3=4;f4=3;f5=0;f6?3.5;f7=12",

i just want to let the rig jump between X11/X13/X15/nist5

But its still jump to "Scrypt"