I'm trying to create a custom action that runs a PowerShell script but am unable to run it because SourceTree is surrounding the parameters with additional quotation marks which break the script.

Here is the custom action I've defined:

Script to run: powershell.exe

Parameters: -NonInteractive -NoProfile -File "C:\path\to\script.ps1" -RepoPath "$REPO" -Commit "$SHA"

And here is what is executed by SourceTree when I run this custom action:

powershell.exe "-NonInteractive -NoProfile -File "C:\path\to\script.ps1" -RepoPath "C:\c\wbsdk" -Commit "cebbfebd23b61bdae80a3505c00e7d7592e2ead1""

Note that SourceTree has added a quote at the start and end of my parameters which causes PowerShell to fail to parse the parameters as intended.