无法在jenkinsfile的powershell步骤中打印已定义的环境变量

pipeline {
    agent any
    stages {
        stage('Print Environment Variables') {
            steps {
                powershell '''
                Write-Host "Environment Variable: $env:VARIABLE_NAME"
                '''
            }
        }
    }
}

pipeline {
    agent any
    stages {
        stage('Print Environment Variables') {
            steps {
                powershell '''
                Get-ChildItem Env: | ForEach-Object {
                    Write-Host "Environment Variable: $_.Name = $_.Value"
                }
                '''
            }
        }
    }
}