--- title: "ToUpper" slug: "toupper" updated: 2024-05-04T19:56:21Z published: 2024-05-04T19:56:21Z canonical: "help.mail-and-deploy.com/toupper" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.mail-and-deploy.com/llms.txt > Use this file to discover all available pages before exploring further. # ToUpper ### General The *ToUpper* function returns a [String](/release34/docs/string) that contains the argument in uppercase letters. ### Syntax The syntax of the *ToUpper* function is: ToUpper Function Syntax ToUpper() ### Examples The following [Expression](/release34/docs/introduction-to-mail-and-deploy-expressions) returns a [String](/release34/docs/string) that contains the value of the field *SalesRepName* of the [Datasource](/release34/docs/introduction-to-datasources) named *Consumer Sales* in uppercase letters: ToUpper Function Example ToUpper([Datasource].[Consumer Sales].[Field].[SalesRepName])