Hi Nitin NNitin2001 ,
Next time, please add a timestamp.
The Curve to Mesh Node now has a Scale Input, that accepts a Field. You can use that instead of the Set Curve Radius.
You'll have to change that inside the Curve to Beam Group, something like so:

Hii Martin
Timestamp is 10:20
In this node Set Curve Radius is not working this screenshot is from Tutorial. I also have used same but no results also I have tried the above method that also showing no results. Please check and help me in this.