[BioC] mapping gene name to affy id

[Ruppert Valentino]

Hello,
 
I wonder if anyone has come across the same problem as I am having.
 
I am trying to map a gene name i.e HGNC symbol to its corresponding affymetrix probe using R/Bioconductor but I don't seem to be able to do it using biomaRt
 
I tried :
 
getBM(attributes=c("affy_hg_u133_plus_2","hgnc_symbol","chromosome_name","band"),filters="affy_hg_u133_plus_2",values="CD86", mart=mart)

and other similar code but they don't work
 
The previous version of biomaRt that uses getFeature() worked when I use something like this :
 
feat = getFeature(symbol = "CD86", type = "affy_hg_u133_plus_2", mart = mart)
 
but I just can't seem to get the same to work using getBM which now superceeds getFeature
 
has anyone come across the same problem and if so how did they solve it.
 
Many thanks.
 
Raphael.

 
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