Nesting Products and Milestones within Existing Jira Hierarchy

Questions & Answers
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1

Hello,
I am attempting to nest issue types: products and milestones, into my existing issue hierarchy from Jira. The existing issue hierarchy is: Initiative → Capability → Feature → Epic → Parent → Sub-Task. On the Jira side, Products and Milestones are brought into the structure via Child-Parent issue links (outward=is a child of, inward = is parent of). My current progress has led me to this code below, but I do not believe it is working. I would like to see the products/milestones (products right now for simplicity) underneath the respective hierarchy level as “siblings” to the level below. i.e. if a product is a child of an initiative, it will be listed on the same level with the capabilities that are below the same initiative.

[[jira.issue_hierarchies]]
name = "Gantt"
all_member_name = "All Gantt Items"
levels = [
  {name="Initiative",key_column="jpoh_parent_5",issue_type="Initiative"},
  {name="Capability",key_column="jpoh_parent_4",issue_type="Capability"},
  {name="Product", 
   calculated_member_expression = 
       "NonEmpty(
           Generate(
               [Issue].CurrentMember.Parent.LinkedIssuesByLinkType('is parent of'),
               [Issue].CurrentMember.Parent.LinkedIssuesByLinkType('is parent of').[Issue].Key,
               ', '
           ),
           [Measures].[Issues created]
       )",
   issue_type="Product"}, 
  {name="Feature",key_column="jpoh_parent_3",issue_type="Feature"},
  {name="Epic",key_column="epic_key"},
  {name="Parent",key_column="epic_parent_key"},
  {name="Sub-task",key_column="subtask_key"}
]

Thank you.