Set DueDate based on FixVersion

[Tanya Fraser]

I have an automation designed to set the due date automatically based on FixVersion but I can't get it working for me. 

The automation says:
When the Value changes for Fix Version

Edit issue fields Due date, {{issue.fixversion.releaseDate.format("d/MMM/yy")}}

The automation says that it is successful and the Associated items field value says it is changed. 

But when I go to the issue, the due date field is empty 

The date field I have (d/MMM/yy) is the date field in the system. Is it possible my Release date format and my due date format are different? 
Any help gratefully accepted!

[Alex Koxaras -Relational- · Accepted solution]

Hi @Tanya Fraser 

Try {{issue.fixVersions.releaseDate.format("yyyy-MM-dd")}}

[Tanya Fraser]

Perfect, thank you!
Works now

[Tanya Fraser]

I tried using jiraDate.
Also says that the automation is successful, but there is nothing displayed in the DueDate Field.
Tried using a custom field "End Date"
Same result - the automation says that it is successful but the field has no date.

By the way, the Releases have release Dates populated

[Alex Koxaras -Relational-]

Place a log component on the value you try to place on the End Date.