Hi Frank,
Many thanks! This could work as a workaround solution for the time being.
If I understand you correctly, ‘1’ means one day in your example? And with the change added of 0.25, 0,5 etc. as the ticket moves to other stages? Not sure what you mean by that 
Or should I just number every stage 1 to 5 i.e. as seperate number per ticket pipeline stage. So the ‘time in stage x’ would be ‘time in stage 1 through 5’ i.e?