[R] input data format of multinom in nnet

[sun]

Hi,

  I 'd like to use multinom to estimate  a multinomial logit model of a 
conjoint survey with a format like:

individual 1 ------choice ------ X1-----X2-----X3
1-----------------A------------1.2----blue----12
1-----------------0-------------1.4----red-----13
1-----------------B------------3.1----green---17
1-----------------0-------------4.2----red-----14
......
2----------------C------------2.1-----blue----11

.......
0 means this alternative did not be chosen. choice set size is 2 for each 
choice.

As I know at this moment, multinom deal with count data format (iris data). 
Anybody knows if multinom can take this format as input?

Thanks.