custom site columns fields not created properly

Hi,

I created multiline site column using xml . and added the same in list schema.xml

"<Field DisplayName="Enhanced RTF" Type="Note"  RichText="TRUE" RichTextMode="FullHtml"  Required="FALSE"   NumLines="6" ID={GUID}/ >

But in list the same column is creating as plain text multiline text column. Same thing happening with other columns when I am making the column unique, unique property is not applied.

Is there any attribute to set in list schema.xml or any thing else?

TIA.