private BRLConditionVariableColumn cloneVariable(BRLConditionVariableColumn variable) {
   BRLConditionVariableColumn clone =
       new BRLConditionVariableColumn(
           variable.getVarName(),
           variable.getFieldType(),
           variable.getFactType(),
           variable.getFactField());
   clone.setHeader(variable.getHeader());
   clone.setHideColumn(variable.isHideColumn());
   clone.setWidth(variable.getWidth());
   return clone;
 }