Add "[AIP] - Asset generic groovy script post function" to the workflows to update an asset object on transition. The groovy script runs only once (not for each asset), all the matching custom fields with asset objects are passed to the post function as context parameter.
Default implementation of a change holder. It is used to update a custom field.
Helper class for the post function groovy script. See aipUtils for details
Sample Post Function configuration page
You can add multiple post functions or multiple attributes for one post function.
Try Groovy Scripts
You can immediately execute groovy script so see result. This will let you write and try your groovy scripts faster. Please keep in mind that scripts will be actually executed, if you modify anything please use test objects (issue, asset, etc.)!