dynamic group

Dear lammps users
i want to define dynamic group in my input to include added atoms to my system,here is part of my input

dimension 3
units real
boundary p p f
atom_style charge
read_data data.mix
group nickel type 1
group oxygen type 2
group oxy dynamic oxygen every 100

and mylog file:

dimension 3
units real
boundary p p f
atom_style charge

Dear lammps users
i want to define dynamic group in my input to include added atoms to my
system,here is part of my input

dimension 3
units real
boundary p p f
atom_style charge
read_data data.mix
group nickel type 1
group oxygen type 2
group oxy dynamic oxygen every 100
....
and mylog file:

dimension 3
units real
boundary p p f
atom_style charge
#######################
read_data data.mix
  orthogonal box = (-0.385 -0.0715 -1) to (24.615 25.9385 47.215)
  1 by 1 by 1 MPI processor grid
  reading atoms ...
  1900 atoms
displace_atoms all move 0.0 0.0 4.0 units box
#######################
mass 1 58.689999
mass 2 15.999400
#######################

group nickel type 1
1800 atoms in group nickel
group oxygen type 2
100 atoms in group oxygen
group oxy dynamic oxygen every 100
ERROR: Invalid fix style (../modify.cpp:714)

i use lammps-1Feb14 version of lammps and i applied patch.8Feb14 and
re-build lammps.what does this error mean and how can i solve it?

you cannot just selectively apply one patch. you have to apply all
patches in between as well.
the best way to solve it would be to build the latest version instead.
it includes additional bugfixes, including some to the dynamic groups
feature.

axel