How to get Table field properties through X++ Code

static void RB_TableFieldProperties(Args _args)
{
    TreeNode custFldsRoot = treeNode::findNode(@"\Data Dictionary\Tables\CustTable\Fields");
    TreeNodeIterator              custFldsIterator;
    TreeNode                         custFlds;
    NoYes                              visibleProp;
 
    ;
   custFldsIterator   =   custFldsRoot.AOTiterator();
   custFlds              =   custFldsIterator.next();
   while(custFlds)
   {
        if(custFlds.AOTgetProperty('Mandatory') == 'Yes')
        info(strfmt("field %1", custFlds.treeNodeName()));
        custFlds = custFldsIterator.next();
  }
}