Hi Sebastiaan,

In umbImport I'm using the Pagepicker, thin it's the same for the ultimate picker. First I initialize the PagePicker,'I'll pass the null value because I don't need to store the value in Umbraco. And I'll have a property because I never talk directly to private fields

private

 pagePicker _pagePicker = new pagePicker(null);
 

///
 
 <summary>
 
/// Holds a reference to the PagePicker
 
/// </summary>
 
private pagePicker PagePicker
{
 
get { return _pagePicker; }
}

Then in my onInit event I'll add it to an existing placeholder.

 
/// <summary>
 
/// Initialize the PagePicker Control
 
/// </summary>
 
/// <param name="e"></param>
 
protected override void OnInit(EventArgs e)
{
 
base.OnInit(e);
PagePicker.ID = 
"ContentPicker";
PagePickerHolder.Controls.Add(PagePicker);
}

You can get/set the value by referencing the Value property

Cheers,

Richard