API - Delete SMS by ID

I want to delete a SMS using his ID with API (VB.NET)
But with this, doesn’t work.

Dim mk As New MyLibrary.MK("192.168.88.1")
mk.Login("admin", "123456")
mk.Send("/tool/sms/inbox/remove", False)
mk.Send("=.id=*1, True)
mk.Read()
mk.Close()

What is wrong?
(RB433UAH v5.0rc7 with USB Modem)