Quantmod problem with getQuote with yahooQF options

Hi,

I just tried out the examples given in the getQuote but it didn't return the columns as I specified but return the default columns:

fundamentals = getQuote(paste(as.character(as.vector(unique(hrtwts$ticker))),sep=";",collapse=";"),what=yahooQF(c("Bid","Ask")))

downloading set: 1 , 2 , 3 , 4 , 5 , 6 , ...done

head(fundamentals)

Trade Time   Last Change % Change   Open   High    Low   Volume
GOOG 2011-09-30 04:00:00 515.04 -12.46   -2.36% 520.21 524.00 514.38  2724908
AAPL 2011-09-30 04:00:00 381.32  -9.25   -2.37% 387.12 388.89 381.18 19579888
AOL  2011-09-30 04:03:00  12.00  -0.27   -2.20%  12.03  12.46  11.86  2328948
DMD  2011-09-30 04:00:00   8.00  +0.05   +0.63%   7.81   8.01   7.76   154085
AMZN 2011-09-30 04:00:00 216.23  -6.21   -2.79% 218.19 223.00 215.21  6553621
HPQ  2011-09-30 04:00:00  22.45  -1.33   -5.59%  23.57  23.75  22.42 40146916

tail(fundamentals)

Trade Time   Last Change % Change  Open    High   Low   Volume
DNP  2011-09-30 04:00:00 10.000  +0.05   +0.50%  9.95   10.00  9.88   265790
LHO  2011-09-30 04:01:00 19.200  -0.63   -3.18% 19.48   20.03 19.16  1145709
HGT  2011-09-30 04:00:00 21.282 -0.188   -0.88% 21.19 21.5486 21.11   152061
UA   2011-09-30 04:02:00 66.410  -4.09   -5.80% 69.21   70.41 66.38  1089147
ORCL 2011-09-30 04:00:00 28.740  -0.91   -3.07% 29.25   29.74 28.74 42188036
BANF 2011-09-30 04:00:00 33.160  +0.63   +1.94% 32.08   33.75 31.26    28020

Can anyone help? Thanks!

best regards,
Xian