[test_conversion_rev2.py](https://github.com/user-attachments/files/22618419/test_conversion_rev2.py,
in atttached pyaedt code for HFSS automation, i have several variables inside circuit design. i want to make a loop with U4_index(project variable), h1 & cap (local variables in circuit design) and analyze the circuit for set of parameters. push excitations and calculate total efficiency. then export report for all the plots of s parameters , voltage and total efficiency. i will get folllowing error for this code for definition of h1 & cap :

/users/mz080139/PycharmProjects/PythonProject/.venv/bin/python /scratch/mz080139/Thin_phone_study/new_design/C1_h1_sweep_V1/test_conversion_rev2.py
PyAEDT INFO: Python version 3.12.11 (main, Jun 19 2025, 11:41:33) [GCC 8.5.0 20210514 (Red Hat 8.5.0-27)].
PyAEDT INFO: PyAEDT version 0.20.0.
PyAEDT INFO: Initializing new Desktop session.
PyAEDT INFO: Log on console is enabled.
PyAEDT INFO: Log on file /tmp/pyaedt_mz080139_ea0efddb-0040-459e-ae5f-2a3739bc1851.log is enabled.
PyAEDT INFO: Log on AEDT is disabled.
PyAEDT INFO: Debug logger is disabled. PyAEDT methods will not be logged.
PyAEDT INFO: Launching PyAEDT with gRPC plugin.
PyAEDT INFO: New AEDT session is starting on gRPC port 39241.
PyAEDT INFO: Electronics Desktop started on gRPC port: 39241 after 16.907184600830078 seconds.
PyAEDT INFO: AEDT installation Path /apps/ansoft/AnsysEM24.2.1/v242/Linux64
PyAEDT INFO: Ansoft.ElectronicsDesktop.2024.2 version started with process ID 1346852.
PyAEDT INFO: Python version 3.12.11 (main, Jun 19 2025, 11:41:33) [GCC 8.5.0 20210514 (Red Hat 8.5.0-27)].
PyAEDT INFO: PyAEDT version 0.20.0.
PyAEDT INFO: Returning found Desktop session with PID 1346852!
PyAEDT INFO: Project Cir_C1_h1_sweep_IFA has been opened.
PyAEDT INFO: Active Design set to 0;Circuit1
PyAEDT INFO: Active Design set to 0;Circuit1
PyAEDT INFO: Aedt Objects correctly read
PyAEDT INFO: Python version 3.12.11 (main, Jun 19 2025, 11:41:33) [GCC 8.5.0 20210514 (Red Hat 8.5.0-27)].
PyAEDT INFO: PyAEDT version 0.20.0.
PyAEDT INFO: Returning found Desktop session with PID 1346852!
PyAEDT INFO: Project Cir_C1_h1_sweep_IFA set to active.
PyAEDT INFO: Active Design set to 0;Circuit1
PyAEDT INFO: Aedt Objects correctly read
PyAEDT ERROR: **************************************************************
PyAEDT ERROR: File "/scratch/mz080139/Thin_phone_study/new_design/C1_h1_sweep_V1/test_conversion_rev2.py", line 15, in
PyAEDT ERROR: cir["cap"] = "0.0e-12"
PyAEDT ERROR: AEDT API Error on set_variable
PyAEDT ERROR: Last Electronics Desktop Message - [error] script macro error: property 'cap' does not exist. (05:17:18 am sep 30, 2025)
PyAEDT ERROR: Method arguments:
PyAEDT ERROR: name = cap
PyAEDT ERROR: expression = 0.0e-12
PyAEDT ERROR: **************************************************************
PyAEDT ERROR: **************************************************************
PyAEDT ERROR: File "/scratch/mz080139/Thin_phone_study/new_design/C1_h1_sweep_V1/test_conversion_rev2.py", line 16, in
PyAEDT ERROR: cir["h1"] = "5e-3"
PyAEDT ERROR: AEDT API Error on set_variable
PyAEDT ERROR: Last Electronics Desktop Message - [error] script macro error: property 'h1' does not exist. (05:17:19 am sep 30, 2025)
PyAEDT ERROR: Method arguments:
PyAEDT ERROR: name = h1
PyAEDT ERROR: expression = 5e-3
PyAEDT ERROR: **************************************************************
Variables set successfully
PyAEDT INFO: ModelerCircuit class has been initialized! Elapsed time: 0m 0sec
PyAEDT INFO: Parsing /scratch/mz080139/Thin_phone_study/new_design/C1_h1_sweep_V1/Cir_C1_h1_sweep_IFA.aedt.
PyAEDT INFO: File /scratch/mz080139/Thin_phone_study/new_design/C1_h1_sweep_V1/Cir_C1_h1_sweep_IFA.aedt correctly loaded. Elapsed time: 0m 0sec
PyAEDT INFO: aedt file load time 0.07863569259643555
PyAEDT INFO: ModelerNexxim class has been initialized!
PyAEDT INFO: Modeler class has been initialized! Elapsed time: 0m 0sec
PyAEDT ERROR: **************************************************************
PyAEDT ERROR: File "/scratch/mz080139/Thin_phone_study/new_design/C1_h1_sweep_V1/test_conversion_rev2.py", line 22, in
PyAEDT ERROR: cir.push_excitations("S1")
PyAEDT ERROR: AEDT API Error on push_excitations
PyAEDT ERROR: Last Electronics Desktop Message - [error] script macro error: property 'h1' does not exist. (05:17:19 am sep 30, 2025)
PyAEDT ERROR: Method arguments:
PyAEDT ERROR: instance = S1
PyAEDT ERROR: **************************************************************
Excitations pushed successfully
PyAEDT ERROR: A(n) <class 'TypeError'> error occurred while retrieving information for the active AEDT sessions: argument of type 'NoneType' is not iterable
PyAEDT INFO: Desktop has been released and closed.

Process finished with exit code 0

i will appriciate any feedback or comment on this issue