[R] How to select the column header with \Sexpr{}

[Felipe Carrillo]

Hi:
Since I work with a few different fish runs my column headers change everytime
I start a new Year. I have been using \Sexpr{} for my row and columns and now 
I am trying to use with my report column headers. \Sexpr{1,1} is row 1 column 1,
what can I use for headers? I tried \Sexpr{0,1} but sweave didn't like 
it..Thanks in advance
for any hints

 
Felipe D. Carrillo
Supervisory Fishery Biologist
Department of the Interior
US Fish & Wildlife Service
California, USA