how can i use _FFSetValueByid

[khang0001]

my code is :

#Include <FF.au3>

If _FFStart("http://ff-au3-example.thorsten-willert.de/",default,2) Then
    _FFSetValueById("user","Max Mustermann")
    _FFSetValueById("pass","My_Password")

    _FFDisConnect()
EndIf

but it have error :

>"C:\Program Files\AutoIt3\SciTE\..\autoit3.exe" /ErrorStdOut "C:\Documents and Settings\XP_PRO\Desktop\autooff\1.au3"    
_FFConnect: OS: WIN_XP WIN32_NT 2600 Service Pack 2
_FFConnect: AutoIt: 3.3.6.1
_FFConnect: FF.au3: 0.6.0.1b-7
_FFConnect: IP: 127.0.0.1
_FFConnect: Port:   4242
_FFConnect: Delay:  2ms
_FFConnect: Socket:     1688
_FFConnect: Browser:    Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.16) Gecko/20110319 AlexaToolbar/alxf-2.11 Firefox/3.6.16 (.NET CLR 3.5.30729)
__FFSendJavascripts: Sending functions to FireFox .......... done
_FFOpenURL: http://ff-au3-example.thorsten-willert.de/
__FFSend: try{window.content.top.document.location.href='http://ff-au3-example.thorsten-willert.de/'}catch(e){'_FFCmd_Err';};
__FFRecv: http://ff-au3-example.thorsten-willert.de/
_FFLoadWait: .......... loaded in 2486ms
[object XPCNativeWrapper [object HTMLDocument]] — {contentType: "text/html", addEventListener: function() {…}, defaultView: {…}, setUserData: function() {…}, title: "FF.au3 Sample Page", ownerDocument: null, body: {…}, ...}
__FFSend: FFau3.WCD=window.content.top.document;
__FFRecv: [object XPCNativeWrapper [object HTMLDocument]] — {contentType: "text/html", addEventListener: function() {…}, defaultView: {…}, setUserData: function() {…}, title: "FF.au3 Sample Page", ownerDocument: null, body: {…}, ...}
[object XPCNativeWrapper [object HTMLDocument]] — {contentType: "text/html", addEventListener: function() {…}, defaultView: {…}, setUserData: function() {…}, title: "FF.au3 Sample Page", ownerDocument: null, body: {…}, ...}
C:\Documents and Settings\XP_PRO\Desktop\autooff\1.au3 (4) : ==> Unknown function name.:
_FFSetValueById("user","Max Mustermann")
^ ERROR
>Exit code: 1    Time: 4.103

I don`t know what error and how can i repair, please help me

[BrewManNH]

There is no function called _FFSetValueByID in the FF.au3 UDF. There is a function called _FFSetValue though.