Set a custom field value while transition takes place

[S S]

Hi,

How to set a post-function for a custom field after it's status is transitioned 
eg: Label = BIA  
I tried using "Update issue custom field" but i'm not sure how to use the 'BIA' option in the Custom field box. Do i need to use any expression? If yes please recommend how!

Thanks

[Mohamed Benziane]

Hi,

You will need to use Automation to achieve this. It's not possible to update a label with the "update issue custom field' option in the workflow