RStudio does not assign well Help section during building a package

Question

I want to build a Rpackage (RStudio) with this function:

  #' hex2rgb
  #'
  #' Give RGB color code from HEX color code
  #'
  #'  @param color.vector RGB channels datas from PictureResults
  #'  @return results , the name of the matrix
  #'  @examples
  #'  # RGB color code of "Alice Blue" color:
  #'  hex2rgb("#f0f8ff")
  #'  # RGB color code of "Red" color:
  #'  hex2rgb("#ff0000")
  #'  @export
   hex2rgb <- function(color.vector) {code}

The package works well but when I build & reload, the @paramand the others @ in Help section are putting in Detailssubsection and there are all stick on like that:

@param color.vector RGB channels datas from PictureResults @return resultat , the name of the matrix @examples # RGB color code of "Alice Blue" color: hex2rgb("#f0f8ff") # RGB color code of "Red" color: hex2rgb("#ff0000") @export

I had lunch devtoolsand roxygen2 before and my R version is R.3.3.2.

What can be the origin of the problem ?