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Set PowerShell Global Variable Value using Set-Variable Cmdlets Set-Variable Cmdlets to Create PowerShell Global variable I have written the PowerShell script inside Windows PowerShell ISE, you can also use Visual Studio code to write, debug and test PowerShell script. Whatever assigned inside the function was not available. But when I come out of the function I can see the values which were assigned outside of the function.

Then I had assigned some values outside of a function and also I assigned some values inside a function. For example, I have declared a variable as $message at the top of the PowerShell script. In PowerShell, we can not just declare the variable at the top and can not access from everywhere. $global:myglobalvariable2 = $null How can we use PowerShell global variable inside a function? We can declare a PowerShell global variable by using the global keywords like below: $global:myglobalvariable="This is a PowerShell global variable" How to declare a PowerShell global variable? In PowerShell, if a global variable and a local variable has the same name, then the local variable can shadow the PowerShell global variable.

Note: Only declaring a variable at the top will not become a global variable in PowerShell. The good approach is to declare the global variable at the top with proper syntax. PowerShell global variable is accessible to scripts, function and to any cmdlet in the current session. Ideally, we declare a global variable in PowerShell at the beginning. PowerShell global variables are variable which can be accessed anywhere inside the script, functions, etc.