public ExParValue getExParValue() {
   ExParValue v = null;
   try {
     // ExDesignTreeParser parser = new ExDesignTreeParser(new
     // StringReader(text.getText()), Base.getEncoding());
     ExDesignTreeParser parser = new ExDesignTreeParser(new StringReader(text.getText()));
     v = parser.assignableParameterValue();
   } catch (ParseException pex) {
     new de.pxlab.pxl.NonFatalError(pex.getMessage());
   } catch (TokenMgrError tex) {
     new de.pxlab.pxl.NonFatalError(tex.getMessage());
   }
   return v;
 }
 public String getText() {
   return text.getText();
 }