If I understand correctly...
Add the items to the BreadCrum control in Designer: ---> Item1|Item2|Item3|Item4
In Globals:
In BreadCrumb Event_Click
If Crumbs.Size=1 Then
If lastcrumbstate=Crumbs.Size-1 Then
For i = 2 To 4
Crumbs.Add("Item " & i)
Next
Else
lastcrumbstate=Crumbs.Size-1
End If
Else
lastcrumbstate=-1
End If
B4XBreadCrumb1.Items = Crumbs
Sure there's another way to do it ..