This guide was written for Chrome users. If you're using a different browser, don't hesitate to contact us, we'll prepare a guide for you.
Step 1:
Open the page that you want to test
Step 2:
Hit F12 to open the developer tools and select "Console"
Step 3:
Paste the following text and hit Enter.
wisepops('log');
Step 4:
Click on the arrow next to message. Then click on the arrow next to properties.
Your custom properties should appear there.