Go to the "Variables" section Make sure the Container ID is listed under the Build-In Variables Create "User defined variables" following this scheme: Type of variable: Data layer variable Name of the data layer variable: dimensionXX, where "XX" is the index of the dimension created on GA. For example, if the index of your dimension is 1, please indicate dimension1, if it’s 2, please indicate dimension2 and so on. indicate the value you set up in your custom dimension on GA4 (ex: Adloop_click_1) And give it an adloop related name Repeat these operations for all custom dimensions created in GA
 Open the configuration of the "Google Analytics settings" variable, In "More Settings -> Custom Dimensions, click on "Add Custom Dimension" Fill in the following information: Index: XX (where "XX" is the index of the dimension created on GA) Dimension value: {{adloop_click_XX}} (Use the brick to choose the previously created variable) Repeat these operations for all variables created in GTM
 Go to the "Tags" section and add a new tag of type "Custom HTML", with the name "Adloop tag". Copy and paste the content provided on the Adloop interface into the "HTML" field of the tag Save the tag without trigger
 Open the configuration of the Google Analytics tag with the largest trigger ("All pages" or “Pageviews” for example). In the advanced settings of this tag, in "Tag sequencing", check "Trigger a tag before Google Analytics is triggered" and choose the "Adloop tag" previously created
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