i am using modalpopup to enter some value in a textfield. after the value is selected in the modalpopup view, the modalpopup is closed and the value has taken the propriate value. Even if the value is displyed in the textfield, the textfield1.text returns me string empty. when i see the source code (html), i see that even that the textfield is displaying something it hasn't really this value in it, because the appropriate html input field hasn't value yet.

thats the code i use to fill this textfield.

function CloseRequestModal(s)
    {
        document.getElementById('<%=txtRequest.ClientID%>').value = s;

        var mpu = $find('<%=ModalPopupExtender3.ClientID%>');
        mpu.hide();
    }

Please Help, Thanks in advance.