VS 2010 Add A Value To The Registry For The Runonce Key?

I need to add a value to the registry for the runonce key but I keep getting this error:Argument not specified for parameter 'MainKey' of 'Public Function BungeRegValue(MainKey As Microsoft.Win32.RegistryKey, sKey As String, sKeyName As String, oNameValue As Object, RegType As Microsoft.Win32.RegistryValueKind) As Boolean'.Creating the Function is fine but I get the error when I try to add the function to a button click event

Public Function MyRegValue(ByVal MainKey As RegistryKey, ByVal sKey As String, ByVal sKeyName As String,
ByVal oNameValue As Object, ByVal RegType As RegistryValueKind) As Boolean
Try

[code].....