How to override the .go code of a resource argument in terraform?

There is a 1024 character restriction set for the AWS aws_alb_listener_rule resource that is imposed here. I need to parameterise this character limit as the message body I want to send in the response is longer than 1024 characters.

I am new to terraform, is it possible to make such alterations to the .go code somewhere and bring this through to the aws_lb_listener_rule resource used in my terraform project?

Ideally I would have a resource like:

resource "aws_lb_listener_rule" "discovery" {
  listener_arn = aws_lb_listener.func.arn
    
  action {
    type = "fixed-response"
    
    fixed_response {
      content_type = "application/json"
      message_body = jsonencode(local.discovery)
      status_code  = "200",
      message_body_chr_limit = 2000,
    }
  }
    
  condition {
    path_pattern {
      values = [
        "/discovery"]
    }
  }
    
  tags = var.infra_tags
}

Is this possible to do? Or does it require PR to the AWS terraform project?

>Solution :

This is an AWS defined limit, so the answer is it cannot be done:

Length Constraints: Minimum length of 0. Maximum length of 1024.