1. Select the Solvers panel.
2. Make sure that the LS-DYNA command matches the one on your computer.
3. Click the Replace button, if you've made a change.

The created command file may look like this:

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Command file "com.linear.single"
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$ Generated using LS-OPT Version 4.1
$
"Optimization Problem"
$
$ Created on Fri Jan  7 12:20:34 2011
solvers 1
responses 5
$
$ NO HISTORIES ARE DEFINED
$
$
$ DESIGN VARIABLES
$
variables 2
 Variable 'tbumper' 3.
  Lower bound variable 'tbumper' 1.
  Upper bound variable 'tbumper' 5.
 Variable 'thood' 1.
  Variable 'thood' discrete {1 2 3 4 5}
 Variable 'thood' use discrete

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$      OPTIMIZATION METHOD   
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$
Optimization Method SRSM

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$      SOLVER "1"
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$
$ DEFINITION OF SOLVER "1"
$
 solver dyna960 '1'
  solver command "ls971_R4_2"
  solver input file "main.k"
  solver check output on 
  solver compress d3plot off 
$ ------ Pre-processor --------
$   NO PREPROCESSOR SPECIFIED
$ ------ Post-processor --------
$   NO POSTPROCESSOR SPECIFIED
$ ------ Metamodeling ---------
  solver order linear
  solver experiment design dopt
$ ------ Job information ------
  solver concurrent jobs 1
$
$ RESPONSES FOR SOLVER "1"
$
 response 'Disp2' 1 0 "BinoutResponse -res_type Nodout  
  -cmp x_displacement -id 432 -select TIME "
 response 'Disp1' 1 0 "BinoutResponse -res_type Nodout  
  -cmp x_displacement -id 167 -select TIME "
 response 'MaxAccel' 1 0 "BinoutResponse -res_type Nodout  
  -cmp x_acceleration -id 167 -select MAX -start_time 0.0000 -filter SAE  -filter_freq 60.0000"
 response 'HIC' 1 0 "BinoutResponse -res_type Nodout  
  -cmp HIC15  -units S -lengthunits MM -id 432"
 response 'MASS' 1 0 "DynaMass 2 3 4 5 MASS"

composites 1
$
$ COMPOSITE RESPONSES
$
 composite 'Intrusion' type weighted
  composite 'Intrusion' response 'Disp2' -1 scale 1
  composite 'Intrusion' response 'Disp1' 1 scale 1
$
$ OBJECTIVE FUNCTIONS
$
 objectives 1
 objective 'HIC' 1
$
$ CONSTRAINT DEFINITIONS
$
 constraints 1
 constraint 'Intrusion'
  upper bound constraint 'Intrusion' 550
$
$ PARAMETERS FOR METAMODEL OPTIMIZATION
$
 Metamodel Optimization Strategy DOMAINREDUCTION
$
  iterate param design 0.01
  iterate param objective 0.01
  iterate param stoppingtype and
$
$ OPTIMIZATION ALGORITHM
$
 Optimization Algorithm hybrid simulated annealing
  Use GSA
$
$ JOB INFO
$
 iterate 10
STOP