# \ConditionApi
All URIs are relative to *http://localhost:8080/engine-rest*
[**evaluate_condition**](ConditionApi.md#evaluate_condition) | **post** /condition |
## evaluate_condition
> Vec<crate::models::ProcessInstanceDto> evaluate_condition(evaluation_condition_dto)
Triggers evaluation of conditions for conditional start event(s). Internally this maps to the engines condition evaluation builder method ConditionEvaluationBuilder#evaluateStartConditions(). For more information see the [Conditional Start Events](https://docs.camunda.org/manual/7.13/reference/bpmn20/events/conditional-events/#conditional-start-event) section of the [BPMN 2.0 Implementation Reference](https://docs.camunda.org/manual/7.13/reference/bpmn20/).
### Parameters
**evaluation_condition_dto** | Option<[**EvaluationConditionDto**](EvaluationConditionDto.md)> | | |
### Return type
[**Vec<crate::models::ProcessInstanceDto>**](ProcessInstanceDto.md)
### Authorization
No authorization required
### HTTP request headers
- **Content-Type**: application/json
- **Accept**: application/json
[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)