[BioC] displayTIFFImage funtion in beadarray package

[Sebastien Gerega]

Hi,
I am trying to use the displayTIFFImage function but keep getting the error:
Error: could not find function "displayTIFFImage"
even though I have the beadarray library installed and loaded and 
?displayTIFFImage provides me with information on the function.
Can this function be used? If so how can i access it?
thanks,
Sebastien