Got error when import long text ( >600 characters ) in excel to SQL column nvarchar (max)

Dear all,

I got error when import long text (>600 characters ) from Excel to SQL , data type of destination column is nvarchar (max) . i also changedTypeGuessRows for HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Jet\4.0\Engines\Excel , but still cant run package successfully .

Any idea for this ?

Many thanks,

Hong