[TCArknight]

Thanks Mathias! That got the Add Expertise message instead of ????? displaying.

Some progress made, but a new issue.

I've added the following eval script to the Skill component.

<!-- set the appropriate candidate expression -->
    <eval index="4" phase="Final" priority="1000" name="aoeHelp Expr">
      <![CDATA[
      var myId as string
      myId = tagids[SkillGen.sk?," & "]
      
      call SetAoEExpr
      ]]></eval>

I've also created the following prodecure.

<!-- Script used to set up AoE selection
  -->
  <procedure id="SetAoEExpr" context="pick"><![CDATA[
    
    ~set up our tag expression for selecting appropriate specialty
    var expr as string
    var myId as string

    expr = "component.SkillAoE & "

    expr &= myId

    gizmo.childfound[AoEHelp].field[aoeAoEExpr].text = expr
    ]]></procedure>

and that results in this error message for each Skill on the hero.

Attempt to access non-existent containing entity from script
Location: Procedure 'SetAoEExpr' near line 11

When the chooser is selected, all Areas of Expertise are available instead of limiting by the expression.

Thoughts?