Advanced Filter Error
Hello,
I created a smart list and have the logic as below, by using Advanced filters 1 and (2 or 3 or 4). However, after I go back to my smart list, it shows me "not saved, invalid expression". I tried 1 and (2 or (3 or 4)), but Marketo still throw out the error. Can anyone kindly share with me why I got this error and how should I modify the advanced filter to make it run properly?

Thank you,
Becky