how to retrieve the path to workspace_publish branch OR any branch in devops , use that path in azure powershell script to read file from that branch.

I want to retrieve path to the branch and folder inside it, basically i wan to read the jsons here and change the dev keyword with uat and save the file back to the sam folder in workspace_publish branch. I can change dev to uat, but am not able to correctly use the path to the files. I am doing this in powershell task in release pipeline.

I have tried using this path :

$(System.DefaultWorkingDirectory)_Data Stage V9_u\foldername\TemplateForWorkspace.json

But i am getting path error with this.

i have tried changig slashes / \ too but the error persists.

024-05-15T07:05:41.1203526Z ##[section]Starting: PowerShell Script
2024-05-15T07:05:41.1616420Z ==============================================================================
2024-05-15T07:05:41.1616789Z Task         : PowerShell
2024-05-15T07:05:41.1616958Z Description  : Run a PowerShell script on Linux, macOS, or Windows
2024-05-15T07:05:41.1617027Z Version      : 2.237.5
2024-05-15T07:05:41.1617162Z Author       : Microsoft Corporation
2024-05-15T07:05:41.1617303Z Help         : https://docs.microsoft.com/azure/devops/pipelines/tasks/utility/powershell
2024-05-15T07:05:41.1617380Z ==============================================================================
2024-05-15T07:05:42.6804168Z Generating script.
2024-05-15T07:05:42.7117125Z ========================== Starting Command Output ===========================
2024-05-15T07:05:42.7368835Z ##[command]"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoLogo -NoProfile -NonInteractive -ExecutionPolicy Unrestricted -Command ". 'C:\agent\_work\_temp\bc7b551c-5267-4e4c-9e52-e2a0683185c5.ps1'"
2024-05-15T07:05:43.1695349Z At C:\agent\_work\_temp\bc7b551c-5267-4e4c-9e52-e2a0683185c5.ps1:6 char:48
2024-05-15T07:05:43.1696665Z + $inputPath = $(System_DefaultWorkingDirectory)/_Data Lake V1_u/synw-i ...
2024-05-15T07:05:43.1697533Z +                                                ~
2024-05-15T07:05:43.1698046Z You must provide a value expression following the '/' operator.
2024-05-15T07:05:43.1698617Z At C:\agent\_work\_temp\bc7b551c-5267-4e4c-9e52-e2a0683185c5.ps1:6 char:48
2024-05-15T07:05:43.1698943Z + $inputPath = $(System_DefaultWorkingDirectory)/_Data Lake V1_u/synw-i ...
2024-05-15T07:05:43.1699371Z +                                                ~~~~~
2024-05-15T07:05:43.1699808Z Unexpected token '_Data' in expression or statement.
2024-05-15T07:05:43.1700391Z At C:\agent\_work\_temp\bc7b551c-5267-4e4c-9e52-e2a0683185c5.ps1:8 char:49
2024-05-15T07:05:43.1700678Z + $outputPath = $(System_DefaultWorkingDirectory)/_Data Lake V1_u/synw- ...
2024-05-15T07:05:43.1701093Z +                                                 ~
2024-05-15T07:05:43.1701527Z You must provide a value expression following the '/' operator.
2024-05-15T07:05:43.1702120Z At C:\agent\_work\_temp\bc7b551c-5267-4e4c-9e52-e2a0683185c5.ps1:8 char:49
2024-05-15T07:05:43.1702404Z + $outputPath = $(System_DefaultWorkingDirectory)/_Data Lake V1_u/synw- ...
2024-05-15T07:05:43.1702797Z +                                                 ~~~~~
2024-05-15T07:05:43.1703199Z Unexpected token '_Data' in expression or statement.
2024-05-15T07:05:43.1703584Z     + CategoryInfo          : ParserError: (:) [], ParseException
2024-05-15T07:05:43.1704538Z     + FullyQualifiedErrorId : ExpectedValueExpression
2024-05-15T07:05:43.1704685Z  
2024-05-15T07:05:43.3041139Z ##[error]PowerShell exited with code '1'.
2024-05-15T07:05:43.4458601Z ##[section]Finishing: PowerShell Script