The data value reported by DTU cannot be filled into Tencent cloud database through Tencent cloud rule engine

My question ：DTU The reported data value cannot be filled into the Tencent cloud database through the Tencent cloud rule engine

Process description ：
I passed the script , Give Way dtu Automatically report sensor data . The data value is “V”： The number of .

My purpose ： Through the rule engine , Put... In the picture above “v”： The value after is forwarded to Tencent cloud mysql In the database .
The rule engine settings are as follows ：

The corresponding database is shown in the following figure ：

Problem related code , Do not paste screenshots

Operation results and error reporting contents

My solution ideas and tried methods

What I want to achieve