如何访问地图列表中的值?

价值 google_compute_subnetwork.subnetwork.secondary_ip_range 看起来像这样:

[
    {
        ip_cidr_range = 10.1.0.0/16,
        range_name = my-range
    }
]

我想不出如何循环,这不起作用:

resource "aws_security_group_rule" "sdfsdfsdf" {
 count = "${length(data.google_compute_subnetwork.mysubnetwork.secondary_ip_range)}"
 type      = "ingress"
 from_port    = 0
 to_port     = 0
 protocol    = "-1"
  cidr_blocks = ["${data.google_compute_subnetwork.mysubnetwork.secondary_ip_range[count.index]}.ip_cidr_range}"]
}