How To Remove A Control From Custom Class

i have created a class with a sub, which removes a control from the original page...

for example, in the original page:

Code:

dim usertextbox as new textbox
usertextbox.id = "TEXTBOXIE"
form1.controls.add(usertextbox)
in the class:

Code:

public sub DeleteTextBox
dim pagetextbox as textbox
pagetextbox = page.findcontrol("TEXTBOXIE")
if not pagetextbox is nothing then
page.controls.remove(pagetextbox)
end if
end sub

the code in the class doesn't work..