[texworks] Typestting arguments configuration

[Lynda Metref]

 Hello,

I am trying to configure new type setting (latexmk with xelatex).

I have manage to run the program in the command line with:
latexmk -pdf file.tex -r param.txt
where param.txt contains $pdflatex='xelatex'

It works in the command line but when adding it to texworks I have the
following error on run:
Latexmk: -pdf bad option

Latexmk: -r param.txt bad option

Latexmk: Bad options specified


The config I have made in Edit=>Preferences=>Typesetting
Program: latexmk
Arguments:
-pdf
-r param.txt
$fullname

I had a similar problem with makeindex when adding arguments

Did I miss something about how to configure it?

Thank you,
    Lynda