I am extracting time in format hh:mm:ss and storing in two vars with different values of time.Vars of type DateTime.
Now how shud i get the difference between time of these vars.
I tried with TimeSpan datatype but for that timeSpan var shud have default value which is format specific and got result but not as desired.
So basically in the workflow use variables of DateTime to store the Dates.
A direct Difference operation can be done on the DateTime variables.
Also, you can format output in String or DateTime type to use the operation for further processing.