X++ code to get Mandatory fileds from a Table

static void MandatoryFieldOfAOTTable(Args _args)
{
SysDictTable       dTable;
SysDictField       dField;
Counter         counter;
;
dTable = new SysDictTable(tablenum(Ledger));
for(counter =1; counter<= dTable.fieldCnt();counter++)
{
dField = new SysDictField(dTable.id(),dTable.fieldCnt2Id(counter));
if(dField.mandatory())
info(dField.name());
}
}