i tried same action by recording and convert the recording action to script.
why there is Browser.Navigate() method called before typing the text into the object
Aliases.browser.pageXpanel3.objectContainer.container0.pageobjectPage66.sprite0.childobjectChild4.Click(184, 28);
//Opens the specified URL in a running instance of the specified browser.
Browsers.Item(btFirefox, "", Browsers.pX64).Navigate("http://10.254.48.39/");
//Enters 'test' in the 'objectContainer' object.
Aliases.browser.pageXpanel3.objectContainer.Keys("test");