Binding Definitions from Workflow Container 
Use
You can define bindings from the workflow container to the following containers:
You can
allocate an expression to the elements of the target container, which refers to an element of the workflow container.Features
Binding definition to task container
This binding can be defined for step types that refer to a task.
The workflow system proposes this binding definition. If new elements are required in the workflow container, proposals are also made for these. You can edit and confirm these proposals or reject them. For further information, refer to
Rule-Based Proposal for Binding Definitions.Special information on object reference
A binding must generally be defined from the element in the workflow container with the reference to the object to be processed, to the element
_WI_Object_ID in the task container. Only in this way can the right object be processed with the single-step task.
If the workflow container contains an element which is defined with a data type reference to the same object type that is created in the referenced single-step task, this binding definition is proposed automatically when an activity is defined.
If no element with an appropriate data type reference is available in the workflow container, a suitable element is added to the workflow container and the binding entered.
Binding definition to event container
This binding definition is only possible for the step type event creator.

The binding definition to the event container is not necessary if the latter only contains the standard event parameters. These standard event parameters are assigned values automatically from the information you specify when defining the event creator.
The binding definition to the event container is necessary if the latter contains elements other than the standard event parameters.
Binding definition to role container
This binding definition is only necessary if you use a role for establishing the agents or recipients.
Activities
For further information, refer to
Operation of the Binding Editor.