1. Use our JavaScript API to push your custom variables to Usabilla on all pages on which you would like to show a Usabilla survey.
2. Create or edit your campaign as you would normally in the Campaign section of your Usabilla account.
3. Once you reach the step Visitor Targeting, choose to only show your campaign to certain visitors.
4. This will open up the targeting options. Within these options you can choose to add a "Custom JavaScript Value Trigger"
5. You can add any variables you wish, provided they match with the ones that are being called by the JavaScript already on the webpage.
6. Once you've set your targeting options, save the campaign and associate it with the page's button. Your campaign will now show when these conditions are met.