db.define_table('supplier',
    Field('suppliercode'),
    Field('suppliername'))
db.supplier.suppliercode.requires = 
IS_NOT_IN_DB(db,db.supplier.suppliercode)
db.supplier.suppliername.requires = 
IS_NOT_IN_DB(db,db.supplier.suppliername)
  

db.define_table('series',
    Field('supplier','reference supplier'),
    Field('seriesname'),
    Field('seriesdescription'),
    Field('description')...
        
db.define_table('product',
    Field('series', 'reference series'),
    Field('suppcode',represent=lambda id, r: '%s %s' % 
(r.series.suppliercode, r.product.tilename)),
    Field('description',represent=lambda id, r: '%s %s' % 
(r.series.seriesname, r.series.id))


In the code above, the second represent works while the second does not. 
What am I missing?? thanks!!!

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