Updating parent card's field based on child card's status

[Edwin Mulianto]

Context: 

All my Design cards (for my Designer to work on) are set up as subtask cards to the Story cards (for my Devs to work on) 

I am trying to set up an automation to edit the value of the "Blocked by" field of a Story card based on the status of their subtask Design Card. 

"Blocked by" is a Select List (Multiple Choices) field, though I can change it to a different type if needed.  Default value for that field = (No Blocker)

Requirements

I want the following to happen: 

1.  If a subtask Design card exists & its status <> Done, then automatically edit the value of "Blocked by" field of its parent Story card to add tag "Design" & remove tag "No Blocker"

2. If a subtask Design card exists & its status = Done, then automatically edit the value of "Blocked by" field of its parent Story card to remove tag "Design" 

Implementation Approach

1 ideally gets triggered when a subtask Design card gets created 

2 ideally gets triggered when a subtask Design card transitions to status Done 

Alternatively, we could set up a scheduled automation to run 1 & 2 every day 

Have tried setting this up multiple times but not had success. Be very grateful for your help to point me in the right directions.  Thank you!

[Ajay _view26_]

@Edwin Mulianto ,

Welcome to the Atlassian Community!

Can you attach the screenshots of the Automation rules which you have tried out so far? This would help us debug the issue further