Error adding an adjustment

[Phrll]

I'm trying to set up an adjustment to a dataset and get the following error:

The data files could not be loaded due to the following errors:

File: thing_adjustments.dat (line 74) - Unrecognized special token following '&'
One or more timing errors were identified. Please review the timing report and correct the errors. You can access the report under the 'Develop' menu or by clicking this link.

Here's my code, line 74 is the <fieldval field="adjCandid" line:

  <thing
    id="adjGood"
    name="Trait - Good"
    compset="Adjustment"
    description="Select this adjustment to add a Good Trait.">
    <fieldval field="adjUsePick" value="0"/>
    <fieldval field="adjCandid" value="TraitCat.Good & !TraitCat.Gadget"/>
    <tag group="AdjustShow" tag="Menu"/>
    <tag group="Helper" tag="UserAdjust"/>
    <tag group="InPlay" tag="PermOK"/>
    <tag group="InPlay" tag="TempOK"/>
    <eval phase="Setup" priority="8000">
      <before name="Calc trtFinal"/><![CDATA[
      if (tagis[Helper.Activated] <> 0) then
        endif
      ]]></eval>
    </thing>

According to the Wiki, the value= syntax should be ok. Both TraitCat.Good and TraitCat.Gadget are valid tags. If I remove "& !TraitCat.Gadget" it works fine.

http://hlkitwiki.wolflair.com/index....Require_Hiding

What am I not doing right?