thanks @mfalkvidd I will have a look at this.

I have a look at https://www.openhardware.io/view/381/Floating-Swimming-Pool-Sensor-Water-Quality

In fact, in my arduino code, I take the average value of the ph and the redox to keep stability of the values. I record it into 2 variables:

• float pH
• int Redox

So I have to use the "var1_msg( 0 , V_VAR1 )," to send my variables as I can see in the "sensor water quality" project.

I will try this