I have a gallery in Power App that shows a list of incidents. I want to show how long ago the incident was opened.
I have a timer on the screen that updates a context variable every second. That works well, when I show the value of the variable in a label, I see the current time increasing every second.
In my Gallery, the value I show is Datadiff(StartDate, MyContextVariable, Minutes). In theory, I believe this should show and increasing number of minutes. However it looks like my calculation take the value of the context variable at "some" point and never updates it?
I managed to make it work since then. I believe my solution was very close to yours.
As of now the only difference is that the time updates a context variables, a Label shows the context files and the gallery uses the Label.text to make all calculations. That works and I use the timer label as a watch which is usefull, my application being used for a very time sensitive matter.