Looking for a unique filed in a subtask

[Fredrik Spadaro]

Hi,

In my Issue managment project I have a subtask called Delivery Request that contains a field called Delivery brach. I'm trying to set up a filter to filter out uniuqe issues that are reported on a certains project "Found in SW Project" but doesn't contain a certain Delivery Branch in the Delivery request, like:

("Found in SW Project" = "Test" AND issueFunction in parentsOf("type = 'Delivery Request' AND ('Delivery Branch' in iqlFunction('Name != branch1)))")

With the filter above I only check one instance of the Delivery branch. It could be that the Issue contains several Delivery request thus several Delivery Branches and then that issues is also caught in me filter. 

I want to check if branch1 is not listed as a Delivery Branch in any of the Delivery Requests subtasks not only one instance.

Anyone have any idea how to setup the filter for this?