anchor.diff:  
     use elens, only: elens_theta_ref, elens_lAllowUpdate, elens_I, elens_Ek, eLensTheta, elens_kz, &
                      nelens, ielens
  -  use cheby
  +  use cheby, only: cheby_resetI, cheby_setScaleKick, icheby, cheby_kz
     use parbeam, only : beam_expflag
     implicit none
   
  
positive.code:   use mod_common_track
    use mod_common_main
    use elens, only: elens_theta_ref, elens_I, elens_Ek, elens_kz, ielens
    use cheby
    use parbeam, only : beam_expflag
    use string_tools
  
  
negative.code: 
        case(cheby_kz)
          if(att_name == "cheby_I") then ! [keV]
            call cheby_resetI(icheby(ii),newValue)
            call cheby_setScaleKick(icheby(ii))
          else
            goto 100 ! ERROR
  