Is there a better way to check if array contains value?

Summary

Is there a better way to check if array contains value?

Content

Hi there,

Just wondering if any of you have come across a better way of checking if a list/array contains a given value. I have a deliveryMethod array which I use on web form as a multi select checklist. Once the form is submitted, I then check if this array has one or more value on the process side using business rule node. See below. It seems like such an overkill to write a business rule to check if a list contains a value. I wish there was a simpler way - say a "contains" function in expression editor which I could