Analog pin A0 to Virtual pin NodeMcu LolinV3 - Blynk

Need Help With My Project
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Hello, iam new there.
How can i make an Analog pin A0 from nodeMcu as a virtual pin (ex.V1) in Blink.
I want read analog data from moisture sensor an use it data in eventor ( if humidity is low . Turn ON D2 (relay)with water pump) thank you

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BLYNK_READ(V5) //Blynk app has something on V5
{
sensorData = analogRead(A0); //reading the sensor on A0
Blynk.virtualWrite(V5, sensorData); //sending to Blynk
}

?

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