| name | a pattern used to generate the name of the properties to set | Yes | 
    | value | a pattern used to generate the value of the properties to set | Yes | 
    | conf | a comma separated list of the configurations for which properties should be set | No. Defaults to the configurations resolved by the last resolve call, or * if no resolve was explicitly called | 
    | haltonfailure | true to halt the build on ivy failure, false to continue | No. Defaults to true | 
    | validate | true to force ivy files validation against ivy.xsd, false to force no validation | No. Defaults to default ivy value (as configured in configuration file) | 
    | settingsRef | A reference to the ivy settings that must be used by this task (since 2.0) | No, 'ivy.instance' is taken by default. | 
    | overwrite | Overwrite the value of the property if it already exist (since 2.0).  Before 2.0, the properties were always overwritten. | No, 'false' by default. |