When using the Integer Attribute option, instead of Items in Collection, the number of instances to be created will always match the number stored into an specified attribute.
It can be selected when configuring a new sub-process and it is only visible when Advanced Settings has been selected.
To illustrate the execution of the Integer Attribute option, please consider the next situation:
When an election will be performed, a process can be executed to allow a poll to be created and register the total amount of votes. Every Poll Station report its results in parallel. Finally, the result must be displayed to the Poll Organizer.
Every Poll Station must be registered, and when the poll has finished, register its results.
The amount of sub-process instances should be the same as the number of Poll Stations, which is provided in the first activity, just before the creation of the sub-processes.
1. In order to configure the sub-process, right-click it and select Configure Sub-process.
2. Continue selecting Multiple in the Sub-process Type menu and selecting its process. When prompted to use Advanced Settings check the option before pressing next.
3. Then select the Integer Attribute option of the Number of Instances drop down list. This will show the field to provide the attribute XPath which contains the number of instances you want to be created each time the sub-process starts.
4. This will enable you to create the number of sub-processes specified within the activities and let them continue at the same time.
•If your process provides information for less than the selected quantity of instances, those will still be created with null information.
•If your process attempts to create more instances than the ones specified, an error will show up: