PowerShell工作流参考脚本变量

Question

以下代码可以正常使用Thom：

Workflow Test-Fruit {
    foreach -parallel ($I in (0..1)) {
        # Create a custom hashtable for this specific object
        $WORKFLOW:Result = [Ordered]@{
            Name  = $I
            Taste = "Good $I"
            Price = "Cheap $I"
        }

        Parallel {
            Sequence {
                # Add a custom entry to the hashtable
                $WORKFLOW:Result += @{'Color' = "Green $I"}
            }
            Sequence {
                # Add a custom entry to the hashtable
                $WORKFLOW:Result += @{'Fruit' = "Kiwi $I"}
            }
        }

        # Generate a PSCustomObject to work with later on
        [PSCustomObject]$WORKFLOW:Result
    }
}
Test-Fruit

但是当我尝试在父作用域中添加另一个变量时，稍后将在某些Sequence块中使用，这会失败：

Workflow Test-Fruit {
    foreach -parallel ($I in (0..1)) {
        # Create a custom hashtable for this specific object
        $WORKFLOW:Result = [Ordered]@{
            Name  = $I
            Taste = "Good $I"
            Price = "Cheap $I"
        }

        $WORKFLOW:Files = Get-ChildItem -Path c:\

        Parallel {
            Sequence {
                # Add a custom entry to the hashtable
                $WORKFLOW:Result += @{'Color' = "Green $I"}

                if ($I -eq 0) {
                    # Do smething with Files
                    $WORKFLOW:Files.Name | Select-Object -First 1
                }
            }
            Sequence {
                # Add a custom entry to the hashtable
                $WORKFLOW:Result += @{'Fruit' = "Kiwi $I"}

                if ($I -eq 1) {
                    # Do smething with Files
                    $WORKFLOW:Files.Name | Select-Object -Last 1
                }
            }
        }

        # Generate a PSCustomObject to work with later on
        [PSCustomObject]$WORKFLOW:Result
    }
}
Test-Fruit

出现以下错误：

  

项目已添加。键入字典：'颜色'键是   补充：'颜色'项目已添加。词典中的关键词：'水果'   关键词：'水果'

如何定义另一个脚本变量，然后在Sequence块中使用它？