$PSItem was added to PowerShell in an attempt to provide a clearer meaning to the variable name. However, in practice, the dollar sign underscore form $_ is most commonly used.

When you use a variable in a template that isn't marked as available in templates, the variable doesn't render. The variable doesn't render because its value isn't accessible within the template's scope.

The New-Variable cmdlet creates a new variable in PowerShell. You can assign a value to the variable while creating it or assign or change the value after it is created.

Sep 6, 2023 · If you specify values for <variable> and <string>, the specified <variable> value is added to the environment and <string> is associated with that variable. If the variable already exists in the …

Jan 9, 2026 · Variables that are defined as expressions shouldn't depend on another variable with expression in value since it isn't guaranteed that both expressions will be evaluated properly. For …

Jul 15, 2025 · To reference a variable in a variable group, you can use macro syntax or a runtime expression. In the following examples, the group my-variable-group has a variable named myhello.

Jul 17, 2025 · Use the browser Find function (typically CTRL + F) to find a specific variable. The variable notes if it's specific to particular step. The article on task sequence steps includes the list of variables …

Use data in your applications by creating literal values and variable values of different data types.

Mar 30, 2022 · Use the Dim statement at the module or procedure level to declare the data type of a variable. For example, the following statement declares a variable as an Integer.

Character data types that are either fixed-size, char, or variable-size, varchar. Starting with SQL Server 2019 (15.x), when a UTF-8 enabled collation is used, these data types store the full range of Unicode …