Data block not supported with packer version 1.6.1 in hcl2 templates - json

Question

I created a packer json template on my local system with packer 1.7.7 installed.
Then I upgraded to hcl2 template. However, when I run the packer pipeline over the jenkins node having packer version 1.6.1. It throws this error:
Blocks of type "data" are not expected here.
Error: Unsupported block type
After researching, I realized that packer version 1.6.1 doesn't support data blocks in its templates, but it supports hcl2 templates.
Can anyone explain how I can replace the data block (ref template below) with something supported in packer version 1?
data "amazon-ami" "autogenerated_1"{
access_key = "${var.aws_access_key}"
filters = {
root-device-type = "ebs"
virtualization-type = "hvm"
name = "**** Linux *"
}
most_recent = true
region = "${var.aws_region}"
owners = ["${var.owner_id}"]
secret_key = "${var.aws_secret_key}"
}
when I am trying to consume this ami id in the source block It gives me error.
ami_name = "${var.ami_name}"
associate_public_ip_address = false
force_deregister = true
iam_instance_profile = "abc"
instance_type = "****"
region = "${var.aws_region}"
source_ami = data.amazon-ami.autogenerated_1.id
ssh_interface = "private_ip"
ssh_username = "user"
subnet_id = "subnet-********"
vpc_id = "vpc-***********"
}

Answer 1

The packer pipeline over the jenkins node having packer version 1.6.1.
Its not supported in such an old version. From docs:
Note: Data Sources is a feature included in Packer 1.7 and later