Hi , My code to resize the ActiveX to the same size of txtActiveXTag

Private Sub UserControl_Resize()
If UserControl.Height <> txtActiveXTag.Height Then UserControl.Height = txtActiveXTag.Height
If UserControl.Width <> txtActiveXTag.Width Then UserControl.Width = txtActiveXTag.Width
txtActiveXTag.Move 0, 0
End Sub

I do not know how i write a code to change txtActiveXTag.Text imediatly once the ActiveX changes (not on loading the ActiveX, but even the Design time)
1- What the proper Event should i use ?
2- Is the Extender.Name is the way to acces the ActiveX Name?