Ansible Playbook - can't access file from Powershell script - windows

Question

I am new to Ansible and trying to run a playbook from my Ansible Controller (Linux box ) against Windows 10 (target machine). The playbook copies a PowerShell script (sample.ps1) from the controller to the target and runs it afterward. The PS script tries to modify an INI file in the target machine. The PS script runs fine if I RDP the target machine and run it from the Powershell window. But when I run it through Ansible Playbook, it does show that the file is changed but actually nothing changed. Here are the scripts and playbook.
Ansible Playbook: sample.yml
'''
name: "Ansible"
tasks:
- name: Copy Powershell script
win_copy:
src: /root/templates/sample.ps1
dest: "C:\\Temp\\"
force: yes
- name: Ensure the file is present on Remote Host
win_stat:
path: "C:\\Temp\\sample.ps1"
become: yes
become_method: runas
become_user: "{{host_name}}\\<<userId>>"
vars:
ansible_become_password: "<<password>>"
ansible_become_user: <<user>>
ansible_become: yes
- name: Run Powershell script
win_command: powershell.exe -
args:
stdin: '.\sample.ps1 -iniFile c:\temp\sample.ini'
chdir: "C:\\Temp\\"
become_method: runas
become_flags: logon_type=new_credentials logon_flags=netcredentials_only
become_user: "{{host_name}}\\<<userId>>"
vars:
ansible_become_password: <<password>>
ansible_become_user: <<user>>
ansible_become: yes
'''
Powershell script: sample.ps1
param ($iniFile)
$prop = Get-Content ($iniFile)
$prop = $prop -replace "xyz", "abc"
Set-Content -Path $iniFile -Value $prop
Run playbook like this:
ansible-playbook sample.yml --extra-vars "host_name=<<machineName>>" -vvvv
And here is the playbook output:
When I RDP the machine and see the content of the sample.ini file, it is unchanged.
Your help is appreciated.