Hello Prof Mazzoni, I have gone through your video "Optimizing Parametric Analyses via Parallelization in OpenSees::, and tried to replicate it in my model, but unfortunately, it is not working. The script is: set ParameterIndex 0 # in case you send in input if {[info exists argv]} { if {[llength $argv]>0} { set ParameterIndex [expr [lindex $argv 0] -1] } } set P "10. 50." set LLT [lindex $P $ParameterIndex] puts LLT_$LLT wipe set fDir "Data/"; file mkdir $fDir; source body.tcl source wall1.tcl source strucload1.tcl source Analysis.tcl loadConst set noder 50033 recorder Node -file Data/Gdispwall${LLT}.out -closeOnWrite -node $noder -dof 1 disp timeSeries Constant 2 pattern Plain 300 2 { load $noder $LLT 0. 0. } integrator LoadControl 0.1 analysis Static analyze 10 puts "Model${LLT} analysis was done" wipe Can you help me with this issue? Thank you.