[ShadowChemosh]

Sorry I capitalized explicit tag which was wrong. Your first post could be fixed by just changing Explicit to explicit.

Otherwise if you want to use the 2nd file you need to include the document header and end tags. So it would be this as the full document:

<?xml version="1.0" encoding="UTF-8"?>
<document signature="Hero Lab Data">
  <thing id="uCOM" name="+1 Comeliness" compset="LevelBonus">
    <tag group="explicit" tag="35"/>
    <eval phase="PreAttr" priority="1000"><![CDATA[
      hero.childfound[aCOM].field[aStartMod].value += 1
      ]]></eval>
    </thing>
  </document>