About forming bond to get a cross link

Dear Lammps users,

I am trying to get a cross link between two nanotubes, to get this I have generated a random carbon atom between the tube. Now i need to form bond between this random atom and adjacent atom of the tube.
I used fix 3 all bond/create 10 1 10 1.5 1 command to create a bond between these atom but I am getting a message of Unknown fix style.

Did I make some mistake or can I use another approach to form cross links.

Thanks
Arun

Dear Lammps users,

I am trying to get a cross link between two nanotubes, to get this I have
generated a random carbon atom between the tube. Now i need to form bond
between this random atom and adjacent atom of the tube.
I used fix 3 all bond/create 10 1 10 1.5 1 command to create a bond between
these atom but I am getting a message of Unknown fix style.

Did I make some mistake or can I use another approach to form cross links.

when you get an "unknown XXX style" error, please check the
documentation for that specific fix style very carefully. LAMMPS can
very customizable and you may not have all relevant packages
installed. if this doesn't reveal a problem, double check your input.
there may be a typo.

axel.