Crosslinking of polymers by bond/react commands

hello lammps users and @jrgissing , i have a problem i want to used bond/react commands for crosslinking of polymers i also go through the lammps discussion list and apply the mention suggestion but f_reax[*] come out zero any help in this regard will be highly appreciated
thank you so much
lammps.zip (44.2 KB)

You did not post to the right forum. Please post to the LAMMPS project. Also note that there is no f_reax in your script. Please correct your post and include what you have done so far to troubleshoot the problem