Blynk Virtua lWrite causes disconnection from local server!

Good Day,

Please can someone help me with my project.

I am running a IoT controller on one Raspberry Pi and am connected to my local Blynk Server on a second Raspberry Pi.
I am using node.js to connect to the server and everything connects and works properly until I try to send an ANALOGUE VALUE to the Blynk Application. I am reading the

This is my code:

Maybe because Pi’s don’t have analogue pins?

I am using an analogue to digital converter and connecting through the SPI using tutorial : http://scruss.com/blog/2013/02/02/simple-adc-with-the-raspberry-pi/