Automation : Selecting value for custom field (asset object) using value in issue summary.

[Rhys]

I am trying to make automation to update a custom field type (assets objects) using data found within an issues summary.  The summary will contain a unique 5 digit ID at the end that I can pull using issue.summary.right(5) but I cant seem to then use this data to select to corresponding asset. In the asset scheme the object type is called Merchants with the attribute called merchant_id (text).  

[Riley Venable]

You can use the Filter Issue Scope (AQL) field to reference system fields from within the issue like “Assignee” and “Project”. For example, if you wanted to only show a list of merchants with the corresponding merchant_id, you could configure the Filter Issue Scope (AQL) field by typing objectType = “Merchants” AND "merchant_id" LIKE ${issue.summary.right(5)}.

[Rhys]

Thanks for the above, I tried this and it still showing all merchant_ids as options when I select the custom field option. If I added the filter issue scope AQL can I have the custom asset object field auto populate?