update field from epic to tasks in JMWE

[Diallo]

Hello everyone, i have an issue about updating the fields in my tasks when this field have modified in its parent(epics). i use JMWE even base action

so for the rule it like that :

When : issue field value changed (to select the all field with concern)

if scope : any project, issuetype (epic)

then copy issue field

with this The value(s) of the following fields will be copied from the current issue to each issue that belongs to the current Epic about link.

but there is not update in the in the task when i modified this field in epic, in the log, it just  return None without error.