Messenger bot调用按钮错误

Question

我创建了一个bot＆amp;它的工作非常好。但是，当涉及到呼叫按钮模板时，它会在手机中输入错误的号码。代码是：

{
 "facebook":{
  "attachment":{
     "type":"template",
     "payload":{
        "template_type":"button",
        "text":"Need further assistance? Talk to a representative",
        "buttons":[
           {
              "type":"phone_number",
              "title":"Call Representative",
              "payload":"+919999999999"
           }
        ]
     }
  }
 }
}

拨号器中的输出为：

14532944069596463097807