Going back to my Scroll Depth trigger example, the variable would be 75% canada whatsapp number data vertical scroll depth. Tags also use variables to collect information that can be passed to the data layer as users interact with your site. A typical example is when a user adds a certain number of products to their shopping cart, a tag fires. Variables can often be reused between tags. A common trick with GTM is to create variables with ID numbers or tracking codes that you need to use more than once.
Let's say you need to use your Google Analytics measurement ID in multiple tags. You can create a variable whose value is your ID number. That way, instead of having to find and enter your ID number over and over again, you can just select the variable name. When using GTM, there are two different types of variables: built-in variables and user-defined variables. Built-in variables are one of the most commonly used types of variables, so Google makes them easily accessible in GTM.
