| Attribute | Type | Description | Required |
|---|
| starting-with | string | Adds TeamCity statistics values for all NAnt properties starting with this string. | True |
| ignore-case | bool | Compare property names with a case insensitive comparison. The default value is true. | False |
| failonerror | bool | Determines if task failure stops the build, or is just reported. The default is true. | False |
| force | bool | If true then the task is forced to execute regardless of running in a TeamCity build. The default value is false. | False |
| if | bool | If true then the task will be executed; otherwise, skipped. The default is true. | False |
| unless | bool | Opposite of if. If false then the task will be executed; otherwise, skipped. The default is false. | False |
| verbose | bool | Determines whether the task should report detailed build log messages. The default is false. | False |