is it possible to feed null values in some POST request params using ELFileBody?

Say if my request template is like this:

{
“id”:"${id}",
“price”:20,
“xyz”:{
“a”:20,
“b”:4,
“c”:2
},
“setId”:2
}

IF i use ELFileBody i can easily replace ${id} with a string in the request. But is it possible if i want to dynamically set integer values for rest of the fields like price, a, setId from session/ feeder?

Why not use a feeder that generates random values to suite your requirement?

For example, I use the following feeder to generate 16 character alphanumeric value and use that using sId variable in my scenario.

val someFeeder = Iterator.continually(Map("someId" -> { val sId = s"${(Random.alphanumeric take 16).mkString("")}" sId; }))