No changes can be seen in the QueryPropertyHistory using Value Stream and REST API Put Request

Hello everyone,

I am using Value stream on ThingWorx Server and sending PUT requests (using REST API) setting the properties values and eventually visualizing the changes using mashups.

This feature works well when I change the properties value manually from the ThingWorx server, as it is mentioned in this training. However, when I send the PUT requests using Postman client or Python scripts with REST API, the properties values get updated successfully but the value changes can not be seen with the QueryPropertyHistory Service. It should be also noted that for sending the PUT request with Postman and Python scripts, I should send the request multiple times. In the first efforts I get the error message "500 Internal Server Error" before the request sent successfully getting the message "200 OK". Please refer to the attachments for python script and a screenshot from Postman client. 

Just before sending this post, I used the suggested Restlet Client sending PUT request and I noticed that not only the value changes can be seen in the QueryPropertyHistory Service table, but also after the first attempt the request sent with message "200 OK", without any "500 Internal Server Error". Then, I tried again to send the request by Postman client and the Python scripts and now I only receive the "500 Internal Server Error" message. I also compared the headers in the Reslet and the other clients but I didn't see any differences. A screenshot from the Restlet Client request can be seen in the attachments.

I would be grateful if anyone could help me on this issue.