i Fixed a bug its now
instruments = db().select(db.Instruments.ALL)
myins = []
for ins in instruments:
myins.append((T(ins.Instrument_name), False,
URL('default','Instruments',args=ins.Instrument_name),)
response.menu = [
(T('Home'), False, URL('default','index'), [])
(T('Instruments'), False, URL('default','Instruments'), [
myins
])
]but still the same problem

