input filtering in CCK fields,how is it possible?

i have added to new fields using CCK to my custom content type. there are email and phone number and i want to restrict their input to just numbers for phone number field and special pattern to email field.

how can i d开发者_开发百科o that?

thank you in advanced.

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There are specific CCK field types for phone number and specific CCK field types for email. You should use these instead of CCK text fields as they automatically validate/restrict the input.