标题：发送短信代码，好难搞呀，请帮忙！

Dim tel As String = e.form.Controls("TextBox2").Value '手机号码输入框名称
Dim msg As String = e.form.Controls("TextBox1").Value '短信内容输入框名称
Dim url As String
Dim http As Object

url = "http://service.winic.org:8009/sys_port/gateway/?id=sdytgs&pwd=888888&to=接收短信手机号码&content=短信内容&time="

http = CreateObject("MSXML2.XMLHTTP")
http.Open("get", url, False)
http.send()
MessageBox.Show("返回信息:" & http.responseText)

上面中间红色这一段，想将短信内容换为 msg ,  手机号码换为 tel ，怎么弄呀？谢谢！！