Conditions

Conditions

Conditions allow you to change the behaviour of BPMN processes during execution. There are two ways you are able to add decision logic to Conditions. The Camunda Modeler refers to them as Type. You can find them in the Condition tab of certain BPMN elements. The first one is Script. This allows you to add arbitrary complexity to your decisions logic and is rarely used for process plugins. The more common Type is Expression. Expressions have the following syntax: ${expression}. An example of a simple expression would be a boolean condition like var == true. For this to work during BPMN process execution, the variable you want to use for the boolean condition must be available in the BPMN process variables before Sequence Flow reaches the evaluation of the expression. You can learn more advanced features of Expressions here.