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  1. about_Variables - PowerShell | Microsoft Learn

    Working with variables To create a new variable, use an assignment statement to assign a value to the variable. You don't have to declare the variable before using it. The default value of all variables is …

  2. Use variables in Classic release pipelines - Azure Pipelines

    Oct 27, 2025 · Use custom variables To use custom variables in your tasks, enclose the variable name in parentheses and precede it with a $ character. For example, if you have a variable named …

  3. Object variable not set (Error 91) | Microsoft Learn

    Sep 13, 2021 · This error has the following causes and solutions: You attempted to use an object variable that isn't yet referencing a valid object. Specify or respecify a reference for the object …

  4. Using the out-of-the-box prompt template language

    Nov 18, 2024 · To include a variable value in your prompt, use the {{$variableName}} syntax. For example, if you have a variable called name that holds the user's name, you can write:

  5. Set function - Power Platform | Microsoft Learn

    Mar 22, 2024 · Use the Set function to set the value of a global variable, which temporarily holds a piece of information, such as the number of times the user has selected a button or the result of a data …

  6. Understand variables in canvas apps - Power Apps | Microsoft Learn

    Aug 27, 2025 · To declare a variable and its type, just include it in any of these functions anywhere in your app. These functions don't create variables; they only fill variables with values. You never …

  7. Link a variable group to secrets in Azure Key Vault

    Sep 10, 2025 · You can create a variable group that links to existing Azure key vaults and maps selected key vault secrets to the variable group. Only the secret names are mapped to the variable …

  8. Use variables to improve your DAX formulas - DAX | Microsoft Learn

    Oct 31, 2022 · The measure definition can be made more efficient by using a variable, VAR. The following measure definition represents an improvement. It uses an expression to assign the "same …

  9. Work with variables - Microsoft Copilot Studio

    Oct 4, 2025 · In the Variable properties panel, you can rename a variable, see where your agent uses it, or convert it to a global variable. You can't convert a global variable back to a topic variable, however.

  10. Everything you wanted to know about variable substitution in strings

    Jun 20, 2024 · There are many ways to use variables in strings. I'm calling this variable substitution but I'm referring to any time you want to format a string to include values from variables. This is …