Blynk notifications

Hello.

I’m doing a project about billing system. The bill will notify to my phone every month. I use Blynk.notify but only show single variable like this 50.

How can i do a notify like this:

Your bill is: $50

the sketch builder in the upper right corner of the forums gave me this.

https://examples.blynk.cc/?board=ESP8266&shield=ESP8266%20WiFi&example=Widgets%2FPushNotification%2FPushNotification_Interval

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