I have list form in sharepoint 2010. i created text box control and in default value i set username() function. this control displays value 'kignja' for current users user name. i want to use this control for filtering but i have problem. my current user that is logged have different username 'kignjakrstic' and i cannot filter data of this user. i think that username() function return value currentuser user name but this function is not return right value? why? what i do