I have a custom entity, duration calculation, which is used to calculate the length of the sales phase for opportunities. In this object, I have a computed field that calculates the duration between the start time of the start and the end time (attached image). When I try to save the error, "Invalid XAML formula" is displayed. What's bad about it?
![enter image description here](https://fooobar.com//img/d6cfba4374153acd6c24ba0d1e2dde94.png)
source
share