次のxmlでコンテンツタイプを作成しましたが、以下のxmlで指定されているカスタムフォームを使用していません。どうしたの ?
<?xml version="1.0" encoding="utf-8"?>
<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
<Field ID="{854DCDF4-5091-4B1E-AA31-D9DC71A29637}"
Type="Text"
Required="TRUE"
DisplayName="Customer ID"
Name="Customer-ID"
Indexed="TRUE"
EnforceUniqueValues="FALSE" />
<Field ID="{7E898932-91C0-4285-A8A2-B6440BE2FDC9}"
Type="Text"
Required="FALSE"
DisplayName="Customer Name"
Name="Customer-Name" />
<Field ID="{5168AB24-21A8-438A-8112-E82E24E180CE}"
Type="Text"
Required="FALSE"
DisplayName="Country"
Name="Country" />
<!-- Parent ContentType: Item (0x01) -->
<ContentType ID="0x010081e20b9903d945a8beacde43ae09f766"
Name="Customer"
Group="Custom Content Types"
Description="Customer Content Type"
Inherits="TRUE"
Version="0">
<FieldRefs>
<FieldRef ID="{854DCDF4-5091-4B1E-AA31-D9DC71A29637}" />
<FieldRef ID="{7E898932-91C0-4285-A8A2-B6440BE2FDC9}" />
<FieldRef ID="{5168AB24-21A8-438A-8112-E82E24E180CE}" />
</FieldRefs>
<XmlDocuments>
<XmlDocument NamespaceURI="http://schemas.microsoft.com/sharepoint/v3/contenttype/forms/url">
<FormUrls xmlns="http://schemas.microsoft.com/sharepoint/v3/contenttype/forms/url">
<New>_layouts/customer/customer.aspx</New>
<Display>_layouts/customer/customerdisp.aspx</Display>
<Edit>_layouts/customer/customeredit.aspx</Edit>
</FormUrls>
</XmlDocument>
</XmlDocuments>
</ContentType>
</Elements>