. Inside the braces, we define the key and values. An array is a grouping of objects. Adding a specific property to each json object in an array in powershell PowerShell 2. ConvertFrom-Json -AsHashtable Name Value ---- ----- a b PowerShell 6. The array is created as a sequential chunk of memory where each value is stored right next to the other. and the second number for the value position of the. PS C> d.