Hi Himanshu,
You can get the value from the sequence of your parameter If you have set parameter accordingly
Para1, Para2, Para3 What ever values they give you have in sequence.
If you want how user enters the Parameters like Para1 first then Para3 comebacks to Para2
you cannot catch that sequence
For this you need to ask user on which sequence he\she gonna enter
Make new parameter with sequence give him the drop down values A-B-C, A-C-B, .... 2^3 = 8 combinations
so what ever sequence he selects make your case accordingly!!
Regards,
Rafaee M