Windows version : only one variable can be selected in mesh transform processing

When selecting multiple variables in mesh transform on Windows version, an error occurs:

Telemac script call
C:\dev\salome4telemac\q4ts\processing\script_telemac_env.bat C:\_telemac_\telemac-mascaret\configs\pysource.win.bat python C:\dev\salome4telemac\q4ts\salome_script\salome_script.py alter --vars variable 0,variable 1 --force C:\dev\salome4telemac\tests\data\simple_mesh\mesh_with_result.slf C:/Users/jmker/AppData/Local/Temp/processing_moYckj/dea9f430192c4fa08bbba1706bdd27a2/OUTPUT_MESH.slf
C:\dev\salome4telemac\q4ts\salome_script\salome_script.py alter --vars "variable 0 variable 1" --force C:\dev\salome4telemac\tests\data\simple_mesh\mesh_with_result.slf C:/Users/jmker/AppData/Local/Temp/processing_moYckj/dea9f430192c4fa08bbba1706bdd27a2/OUTPUT_MESH.slf
Salome available ? False
Telemac available ? True
 ~> Modif in variables:
    Removing variable 0
    Removing variable 1
    Removing variable 2
    Removing variable 3
    Removing variable 4
Traceback (most recent call last):
  File "C:\dev\salome4telemac\q4ts\salome_script\salome_script.py", line 196, in <module>
    main()
  File "C:\dev\salome4telemac\q4ts\salome_script\salome_script.py", line 189, in main
    force=options.force)
  File "C:\_telemac_\telemac-mascaret\scripts\python3\pretel\manip_telfile.py", line 522, in alter
    outres.write()
  File "C:\_telemac_\telemac-mascaret\scripts\python3\data_manip\extraction\telemac_file.py", line 1977, in write
    self.write_mesh()
  File "C:\_telemac_\telemac-mascaret\scripts\python3\data_manip\extraction\telemac_file.py", line 1882, in write_mesh
    raise TelemacException("Missing {} in class".format(variable))
utils.exceptions.TelemacException: Missing varnames in class

It seems that , is removed when passing argument to batch file for telemac environnemnt.

C:\dev\salome4telemac\q4ts\salome_script\salome_script.py alter --vars "variable 0 variable 1" --force C:\dev\salome4telemac\tests\data\simple_mesh\mesh_with_result.slf C:/Users/jmker/AppData/Local/Temp/processing_moYckj/dea9f430192c4fa08bbba1706bdd27a2/OUTPUT_MESH.slf