Formproblem: Linebreak i textbox creates two fields

Linebreak i textbox creates two fields when submitting

[atteso]

When I type some text in the textbox-field and then press enter and write som more text on next line, the textbox-field on submit is divided into two fields when it's sent to the server. (one field have the name of the textboxfield, and the other field take the name of the text written after enter-pressning, but get no value.

Can anyone please help me with this problem?

[RonPK]

Are you using correct HTML? Basically like

<form>
<textarea rows="4" cols="50" name="mytext"></textarea>
</form>