Interword Spacing in XeTeX is not functioning (Fontdimen)

Question

in Default Lyx PDF output, (I presumed it is pdflatex), I used fontdimen2/3/4 to control the interword space, stretch and shrink. In a project, I had to use XeTeX for a particular font. However, the fontdimen2/3/4 doesn't work on the regular text anymore under XeTeX. Only works on fancyhdr.

My Preamble as regards to the text sizes are following:

 %Set word space
\usepackage{everysel}
\EverySelectfont{%
\fontdimen2\font=0.15em% interword space
  \fontdimen3\font=0.15em% interword stretch
  \fontdimen4\font=0.1em% interword shrink
}

%set font size
\renewcommand{\normalsize}{\fontsize{8pt}{8.5pt}\selectfont}
\renewcommand{\large}{\fontsize{20pt}{21pt}\selectfont}

In order to test the functioning, I set all fontdimen to 0, as you observed in the following example, only the fancyhdr is affected. the font I am using is Van Dijck MT Std with Old Style Figures on.

Answer 1

my own problem, found the answer. I used ragged2e to make the type set ragging right. However, it needs to be placed under the everysel. if everysel is before ragged2e, the fontdimen won't work.