# Dropbox::Sign::SubFormFieldRule ## Properties | Name | Type | Description | Notes | | ---- | ---- | ----------- | ----- | | `id`^*_required_ | ```String``` | Must be unique across all defined rules. | | | `trigger_operator`^*_required_ | ```String``` | Currently only `AND` is supported. Support for `OR` is being worked on. | [default to 'AND'] | | `triggers`^*_required_ | [```Array```](SubFormFieldRuleTrigger.md) | An array of trigger definitions, the "if this" part of "**if this**, then that". Currently only a single trigger per rule is allowed. | | | `actions`^*_required_ | [```Array```](SubFormFieldRuleAction.md) | An array of action definitions, the "then that" part of "if this, **then that**". Any number of actions may be attached to a single rule. | |