Submitting A Javascript Post And Follow New Window

[nojitter 0]

var form = "<form id='post_data' action='"+url+"' method = 'post' target='_blank'>" +
		"<input hidden name='user_email' value='"+email+"'/>"+
		"</form>";
$("#post_data").submit();

The above code is the javascript where a button call when clicked, right. When trying in common browser, it opens a new window then I should follow the new window to fill forms but with ubot it doesn't, the new window isn't opened, I already tried allow popups("Yes") and allow popups("In new window") with in shared browser { and in popup { but none of those worked, what I'm doing wrong? I know it's clicking the button to submit because when clicked this button changes the content of the page.

Edited March 23, 2017 by nojitter

[abbas786 78]

Remove the target ='_blank' attribute and try it . If still need any help  post the url or your complete code.