Setting Null Value into Subform

[rodvaN]

Hello, I got this code for setting data into my filtered subform.
---
Private Sub Command18_Click()
Forms!SALIDAS!SALIDASpickingsubform.Form.SalidaAlmacen.Value = False
Forms!SALIDAS!SALIDASpickingsubform.Form.EnAlmacen.Value = True
Forms!SALIDAS!SALIDASpickingsubform.Form.SalidaNum.Value = ""
Forms!SALIDAS!SALIDASpickingsubform.Form.Requery
End Sub
-----

But this field SalidaNum:
Forms!SALIDAS!SALIDASpickingsubform.Form.SalidaNum.Value = ""
Its dropping me a debug.
What would be the correct way to express it to set null?

 

[JCShort]

How about:

Forms!SALIDAS!SALIDASpickingsubform.Form.SalidaNum .Value = Null

What's the debug error?