...function (value, metadata, record)...
You have the record parameter which points to the whole row, so you can display any field you want.
record.get('0') holds the value of the field which belongs the first column.
record.get('1') holds the value of the field which belongs the second column.
record.get('2') holds the value of the field which belongs the third column.
.....
Regardless the name of the field in server side, Unigui always translated the field names to: '0','1','2','3','4'...