Not able to update the DynamoDB table from the IoT device (node-red) MQTT

Hello,
I've created a rule for updating a dynamoDB table but I'm not able to create rows in this table even though I've created a topic and I receive with success into the MQTT client the information from the IoT Device and supposedly all is well configured. Note that I've followed the documentation called "Store device data in a DynamoDB table".
Finally I've double checked the "Troubleshooting your DynamoDB rule" and it seems I do have all properly setup.
So I guess that I've missed a bit detail in the creation of the rule.
I'll appreciate in you can provide me some guidance or easy example using MQTT client, Topic (subscription) and DynamoDB table.
Thank you so much in advance.
Regards - JLR15

Edited by: JLR15 on May 19, 2021 2:32 AM