Before a variable can be set<\/em>, it must be declared. Variables are declared with the Declaring a variable adds an entry to an internal Variables Dictionary, using the variable name as the key and NOTE: AMPscript is a loosely typed language and as a result, the interpreter does not enforce variables to be declared. However, it’s best practice to do so, to ensure the variable name is added to the Variables Dictionary.<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":" Declaring Variables Before a variable can be set, it must be declared. Variables are declared with the var keyword, followed by one or more comma-delimited variable names. For example, if you need to define a member’s first name, last name and membership expiry date, the variables could be declared as: var @firstName, @lastName, @membershipExpiryDate Declaring […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"yoast_head":"\nvar<\/code> keyword, followed by one or more comma-delimited variable names. For example, if you need to define a member’s first name, last name and membership expiry date, the variables could be declared as:<\/p>\nvar @firstName, @lastName, @membershipExpiryDate<\/code><\/pre>\nnull<\/code> as the value. If an entry for that name already exists, the value of the variable will be reset to null<\/code>.<\/p>\n\n