change another name tag

cloudtrail.tf

@@ -5,5 +5,5 @@ resource "aws_cloudtrail" "global_Default" {
   is_multi_region_trail         = true
   include_global_service_events = true
   enable_log_file_validation    = true
-  tags                          = "${merge(var.tags, map("Name", format("%s", var.trail_name)))}"
+  tags                          = "${merge(var.tags, map(var.name_tag_name, format("%s", var.trail_name)))}"
 }