Virtual Column not calculating on mobile device but is on AppSheet development platform

[Domearian]

I wish to display incident occurrences from the time the incidents occured. I wish to display which hours have the most incidents. So, I have created a virtual column which simply get the Hour of a time/date stamp, 24 hours. The Hour is created as text (1 - 24). I then display that text hour in a graph. No on the development platform it is displaying perfectly. On any device or using the App in a browser, it is not displaying. It's almost as if the number has not been captured. So am not sure what is going on, I have attached some screenshots.

[Domearian]

Have managed to resolve it. I picked up a previous question and found out that it will not perform that calculation until a new item is added. So I created a new item (only to delete it after) but that performed the calculation and the graph now shows in both the development platform and now on mobile devices.

[Steve]

Good job!