Acrobat 2017 Pro. On Java Script, Warning Message Box that a required field was missed. Do I have any control over the wording at the top of the box?

This is my example of the Code that I am using to create the message. Could you help me figure out how to change the "Warning: JavaScript Window - " to "You have Missed a Required Field"

(function(){

var cAllFields="";

var cFlag="";

for(var i=0;i<this.numFields;i++)

{

    var cFldName = this.getNthFieldName(i);

    var oFld = this.getField(cFldName);

    if(oFld.type!="button" && oFld.required)

     { if (oFld.defaultValue === oFld.value)

         {

           cFlag = cFlag + "ABC";

           cAllFields = cAllFields + "   " + cFldName.substring(2);  

         }

     }   

}

if(cFlag.slice(0, 3) == "ABC")

{

app.  

app.alert("Following Fields(s) are Required: " + cAllFields);

}

})();