Counter Find Replace Text with alert

Hello!

This code replace all text human, and added a Column Break before the human text.

If the text was replace more than want time, I want show an Alert.

My problem with this code is the Column Break is added 2 times, because looks the function is called 2 times and not 1.

Please, how can I do for show the Alert but don't add 2 Column Break each time the script find the text?

app.findTextPreferences = NothingEnum.nothing;  
app.changeTextPreferences = NothingEnum.nothing;  
  
app.findTextPreferences.findWhat = "human\r";  
app.changeTextPreferences.changeTo = "^M\human\r";  
  
//this will show changes count 
var counter = app.activeDocument.changeText().length;
    if(counter>1){
        alert("BECAREFULL! The text was replace "+ counter + " times");
    }
app.activeDocument.changeText();

Thanks so much in advance.