JSON Property transfer passing the wrong value from RawRequest

Here is one example:

This is a dummy request with id: 

This is how the raw request is:

POST ### HTTP/1.1
Accept-Encoding: gzip,deflate
Content-Type: application/json
Content-Length: 22
Host: ###
Connection: Keep-Alive
User-Agent: Apache-HttpClient/4.1.1 (java 1.5)
Cookie: ###
Cookie2: $Version=1
Authorization: Basic ###

{	
	"id":3900356170,
}

And this is how the value is when taken with PropertyTransfer:

Can you replicate this behavior?

I also tried using the function currentTimeMillis, but the value transferred was always different as well.

"id":${=System.currentTimeMillis()}