JMeter - dynamic structure of HTTP request sampler - jmeter

Question

I am trying to test, with JMeter, a HTTP request like that:
<v2:hotelAvailability>
<identification username='${username}' password='${password}'/>
<checkIn>${checkin}</checkIn>
<checkOut>${checkout}</checkOut>
<roomCriterias>
<!-- one or more repetition -->
<room adult="${adult}">
<children>
<!-- zero or more repetition -->
<child age="${childAge}"/>
</children>
</room>
</roomCriterias>
</v2:hotelAvailability>
As you can see, the structure of the request is dynamic: could be one room or more than one, could be one child or none. I would like to do something like this, but I don't know how to do it with JMeter:
<v2:hotelAvailability>
<identification username='${username}' password='${password}'/>
<checkIn>${checkin}</checkIn>
<checkOut>${checkout}</checkOut>
<roomCriterias>
foreach(${room}:${roomsNb})
<room adult="${room.adult}">
<children>
foreach(child:${children})
<child age="${child.childAge}"/>
end foreach
</children>
</room>
end foreach
</roomCriterias>
</v2:hotelAvailability>
I also want all variables, like ${checkin} or ${roomsNb}, to be read from a csv file. Is this possible?
More specific, if roomsNb=2 than the request will look like that:
<v2:hotelAvailability>
<identification username='${username}' password='${password}'/>
<checkIn>${checkin}</checkIn>
<checkOut>${checkout}</checkOut>
<roomCriterias>
<room adult="${adult}">
<children>
<child age="${childAge}"/>
</children>
</room>
<room adult="${adult}">
<children>
<child age="${childAge}"/>
</children>
</room>
</roomCriterias>
</v2:hotelAvailability>

Answer 1

I have created a solution for your problem.
Go though the below link and let me know if it suits you.
https://funwithjmeter.blogspot.com/2018/12/handle-dynamic-body-in-jmeter.html