line wrapping in xsl-fo to pdf

I apologize for my bad english first, i hope you would understand this 
post,

i have long string of characters in my xsl-fo blocks like this :
<fo:inline>eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee</fo:inline>

and i would like they wrap in my pdf document after conversion by fop  .

with  wrap-option="wrap",  it works only if there is a space or a caret 
return into the string, and i don't have any space or any caret return in 
my string , so in my pdf document the string is cut. 

somebody has an idea to display the entire string correctly ?