Chrome extension switching tabs?

Question

Google Chrome

Hello!
In from the background page I open 2 tabs.
I execute a simple script in tab 1 (content_scripts) after that I send chrome.runtime.sendMessage to the background page that the script is done. The background page makes tab 2 active. And I need to insert var text into this tab 2; (content_scripts) - continuation But for some reason it is executed in tab 1. Although tab 2 is already open.
var text = document.getElementById('txt').value
document.getElementById('new').value = text;