Two device, two templates in one arduino

I try to use Webhook widget in Blynk2.0, but have some problems. I dont understand how it works ((
I have two device in application:

  • Device-1 connect with physical device, and
  • Device-2 for receive data from device-1

In device-1 i have vPin (V6) with data of temperature and i want to transmit this data to device-2 via cloud API to vPin (v4, ID=5)
Ok, for check my idea, i open browser and type:
https://blynk.cloud/external/api/update?token=xxxxxxxxxxxxxxxxxxxx&dataStreamId=5&value=77
, and saw on Graph widget (of device-2) - 77 degrees. Ok, its work ))

Next, i open Webhook setting and try to fill form. But all my attempts failed. In screenshot my last variant, unsuccessful, it doesn’t work too… 410 Error (((

KOTEL - is name of device-1
Please help, how correctly to fill this form?