[BUG] How to create Regula rules based on resource_changes selection under terraform plan json file

[harsh-paypay]

Describe the bug
For some resources, planned values are updated under resource_changes of the TF plan job. For example, for the vpc_flow_log enable rule, most of the details are present under resource_changes instead of resources.
I tried the below code but didn't work.
resource_changes = fugue.plan.resource_changes

How you're running Regula
Please include versions of all relevant tools. Some examples:

• I'm using Regula v2.10.0 as a Rego library with OPA v0.47.1 and a Terraform plan JSON input that I generated with Terraform v1.3.6
• I'm using Regula v#.#.# as a CLI tool and my Terraform source code as an input:

regula run my-modules-dir

Operating System
This can be relevant in some situations. - MacOS 12

Steps to reproduce

vpcs = fugue.plan.resource_changes("aws_vpc")
flow_logs = fugue.plan.resource_changes("aws_flow_log")
flow_log_vpc_ids = {vpc_id | vpc_id = flow_logs[_].vpc_id}
resource_type := "MULTIPLE"

policy[j] {
  vpc = vpcs[_]
  flow_log_vpc_ids[vpc.id]
  j = fugue.allow_resource(vpc)
} {
  vpc = vpcs[_]
  not flow_log_vpc_ids[vpc.id]
  j = fugue.deny_resource(vpc)
}

IaC Configuration
NA

Additional context
NA