Hi, I would like to make use of personalized emails. So one paragraph of the newsletter should only be visible for one group of contacts. I have followed the steps in this video (https://vimeo.com/130181904) and via the Email preview (in the Content section) the personalization works. However when I send a test email in the Marketing section the paragraph is shown for all contacts (so also the contacts who are in the group who were not allowed to see it. Does anyone knows how to solve this?