How do I access ASCX functions & properties from within another ASCX?

How do I access ASCX functions & properties from within another ASCX?

Here's an example of what I am doing


MyTree.ASPX contains
------------------------------------
<%@ Register TagPrefix="TREEAPP" TagName="DisplayMyLeaf" Src="MyLeaf.ascx" %>
... and later....
<TREEAPP:DisplayMyLeaf id="DisplayMyLeaf" runat="server" />


MyLeaf.ASCX contains
------------------------------------
<%@ Register TagPrefix="TREEAPP" TagName="DisplayMyStomata" Src="MyStomata.ascx" %>
... and later....
<TREEAPP:DisplayMyStomata id="DisplayMyStomata" runat="server" />

MyLeaf.ASCX.VB contains
------------------------------------
protected DisplayMyStomata as MyStomata
Sub Page_Load()
    DisplayMyStomata.Open()
End Sub

MyStomata.ASCX.V ...