trigger keyboard event (chrome extension)

[login to view URL] //////////////////////////////////// Please do not contact if you don't know about chrome extension or about execute script ( injection script) /////////////////////////////////// I want to insert value to input of this website. This is the gamble website , I am developing chrome extensions for insert value automatically. Inserting value is easy and work well, but there is some problems. I guess this web site detect real keyboard events , When I used keyboard event triggered the related variables does not change. See attached image, red blank is related values. They must change when inserted numbers but did not. So I change the related values by simple commands. // [login to view URL] = 0.2; // [login to view URL] = 0.2; // [login to view URL] = (bs_odds * 1).toFixed(3); They are changed well, but real problem is when I click the place bet button they would not staked. just stop after few seconds. When I insert value via real keyboard and click place, it stakes well and complete. But When I insert value by codes and click place by hand, it is not proceed. just stop. ************************ MY GOAL IS [login to view URL] value by code [login to view URL] click stake by hand , It must be proceed staking and complete. ************************ Below is what I tried. Take a look please. // var e = [login to view URL]( 'keydown', { which: 50 } ); // var e1 = [login to view URL]( 'keypress', { which: 50 } ); // var e2 = [login to view URL]( 'keyup', { which: 50 } ); // var e = [login to view URL]( 'keydown', { which: 50 } ); // $(sbt).trigger(e); // $(sbt).trigger(e1); // $(sbt).trigger(e2); // var e = [login to view URL]("keydown"); // [login to view URL] = 50; // # Some key code value // [login to view URL] = 50; // $(sbt).trigger(e); // [login to view URL](); // $(sbt).val(0.2); // $(sbt).change(); // $(sbt).trigger("change"); // [login to view URL](); $.[login to view URL] = function (v) { return $(this).val(0.2).trigger("change"); } $(sbt).changeVal(""); // var e = [login to view URL]("keydown"); // var e1 = [login to view URL]("keypress"); // var e2 = [login to view URL]("keyup"); // var e = [login to view URL]("keydown"); // [login to view URL] = 50; // # Some key code value // [login to view URL] = 50; // [login to view URL] = 50; // # Some key code value // [login to view URL] = 50; // [login to view URL] = 50; // # Some key code value // [login to view URL] = 50; // $(sbt).trigger(e); // $(sbt).trigger(e1); // $(sbt).trigger(e2); // $(sbt).trigger(e); // [login to view URL](); // [login to view URL] = 0.2; // [login to view URL] = 0.2; // [login to view URL] = (bs_odds * 1).toFixed(3);