我想问您有关哈希表（powershell）中的动态嵌套键的问题。 我已经做过一些研究，但找不到答案。

# I got this hash structure,works fine
$Hashtable                                              = @{}
$Hashtable.Maincategory                             = @{}
$Hashtable.Maincategory.Subcategory                 = @{}
$Hashtable.Maincategory.Subcategory.MyProperty          = @{ 'property' = 'value'}
$Hashtable.Maincategory.Subcategory.MyProperty

Name                           Value
----                           -----
property                       value



# I want dynamic path to my property
$MainAndSubCategory                                                                = [string]'Maincategory.Subcategory'
$Hashtable.$MainAndSubCategory.MyProperty                                               # doesn't work
$Hashtable."$MainAndSubCategory".MyProperty                                         # doesn't work
$Hashtable."$($MainAndSubCategory)".MyProperty                                       # doesn't work
$Hashtable."$(Get-Variable -Name 'MainAndSubCategory' -Valueonly)".MyProperty           # doesn't work

请多多指教，谢谢。