To understand how the targeting needs to be configured for each of the variations in the different campaigns and how it works, have a look at this example.
Consider you have three campaigns Campaign #1, Campaign #2, and Campaign #3, running on three different webpages. Each of these campaigns has a control (original) version and a variation (changes you made over the control version).
Here, we are typcially testing three different pages of a website in three different campaigns with the intent that if a visitor becomes a part of the variation in campaign #1, he/she must also become a part of the variation in campaign #2 and #3 as well instead of the control.
Now, you can set the cookie-based variation targeting and set custom segment conditions in the Settings > Targets section of your test campaign. This section lists down all the variations you have created in your campaign.
Set up the following cookie segmentation condition for each of your campaigns:
Campaign #1:
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Control: (Cookie “_vis_opt_exp_2_combi” is “Blank” OR “1″) AND (Cookie “_vis_opt_exp_3_combi” is “Blank” OR “1″)
Similarly, set up cookie segmentation for each variation in your campaign.
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Variation: (Cookie “_vis_opt_exp_2_combi” is “Blank” OR “2″) AND (Cookie “_vis_opt_exp_3_combi” is “Blank” OR “2″)
Campaign#2:
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Control: (Cookie “_vis_opt_exp_1_combi” is “Blank” OR “1″) AND (Cookie “_vis_opt_exp_3_combi” is “Blank” OR “1″)
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Variation: (Cookie “_vis_opt_exp_1_combi” is “Blank” OR “2″) AND (Cookie “_vis_opt_exp_3_combi” is “Blank” OR “2″)
Campaign #3
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Control: (Cookie “_vis_opt_exp_1_combi” is “Blank” OR “1″) AND (Cookie “_vis_opt_exp_2_combi” is “Blank” OR “1″)
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Variation: (Cookie “_vis_opt_exp_1_combi” is “Blank” OR “2″) AND (Cookie “_vis_opt_exp_2_combi” is “Blank” OR “2″)
The _vis_opt_exp_CAMPAIGN_ID_combi cookie is generated when the visitors become part of a particular combination of a campaign. In the combination cookie, the Control always has the value of 1, Variation #1 has the value of 2, Variation #2 has the value of 3, and so on.