LR : How to create web_custom_request in LoadRunner

While working on the Flight Booking Application, 

I came across a scenario wherein there were multiple flights needed to be cancelled. The catch was that the count of flights to be cancelled was not fixed. Sometime, it could be 3, sometime 7 etc.

The cancellation request recorded via LoadRunner (in HTML mode) looked like below:

The solution to be above problem was to convert this request into a custom request to dynamically handle the number of flights.

Below is what I did,

I changed the recording options as below:

Then I regenerated the script via below option:

The cancellation request, after regeneration looked like below:

After close observation I understood that there is a repetition of below code, for every flight to be cancelled:

flightID=225259643-798-jB&

flightID=43296680-1568-jB&

flightID=163444829-2337-jB& and so on..

Additionally, there was a repetition of below as well,

.cgifields=33&

.cgifields=32&

.cgifields=90& and so on..

1.       I need to handle these in such a way as to capture each of these for every flight, concatenate them and then substitute in the request in step 3 above.

1.       Below is the code for the same:

a.       Correlations to be captured:-

b.       Code Logic:-

c.      Substitution in Cancellation Request:-

1.       Execution successful!!

Please note: There is a possibility that you might get the below error message during the script re-run:-

To resolve the above, all you need to do is to replace the failing request with its regenerated script counterpart. For ex: I got this error at sign off. So I replaced the Sign Off request as below, i.e. with its custom request:-

And the issue was resolved.

Cheers!!