помогите с WinHttpObj

[extaup]

Вообщем мне нужно отправать картинку с компа, картинка не приходит

screenshot:=(A_ScriptDir . "\432g4hdfsg.png")

bot_token := "Токен"
Global chat_id := айди
Global msg_api_img := Format("https://api.telegram.org/bot{1}/sendPhoto", bot_token)

F4::
    SaveScreenshotToFile(0, 0, A_ScreenWidth, A_ScreenHeight, screenshot)
    Sleep, 2000
    PostImg(screenshot)
return


PostImg(img)
{
    WinHttpObj := ComObjCreate("WinHttp.WinHttpRequest.5.1")
    WinHttpObj.Open("POST", msg_api_img)
    WinHttpObj.SetRequestHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0")
    WinHttpObj.SetRequestHeader("Content-Type", "application/json; charset=UTF-8")
    mJson := Format("{ ""chat_id"": ""{1}"", ""photo"": ""{2}"", ""parse_mode"" : ""{3}"",""caption"" : ""Вот что выпало в рулетке:"" }", chat_id, img, parse_mode)
    WinHttpObj.Send(mJson)
}

SaveScreenshotToFile(x, y, w, h, filePath)
{
    hBitmap := GetHBitmapFromScreen(x, y, w, h)
    gdip := new GDIplus
    pBitmap := gdip.BitmapFromHBitmap(hBitmap)
    DllCall("DeleteObject", Ptr, hBitmap)
    gdip.SaveBitmapToFile(pBitmap, filePath)
    gdip.DisposeImage(pBitmap)
}

GetHBitmapFromScreen(x, y, w, h)
{
    hDC := DllCall("GetDC", Ptr, 0, Ptr)
    hBM := DllCall("CreateCompatibleBitmap", Ptr, hDC, Int, w, Int, h, Ptr)
    pDC := DllCall("CreateCompatibleDC", Ptr, hDC, Ptr)
    oBM := DllCall("SelectObject", Ptr, pDC, Ptr, hBM, Ptr)
    DllCall("BitBlt", Ptr, pDC, Int, 0, Int, 0, Int, w, Int, h, Ptr, hDC, Int, x, Int, y, UInt, 0x00CC0020)
    DllCall("SelectObject", Ptr, pDC, Ptr, oBM)
    DllCall("DeleteDC", Ptr, pDC)
    DllCall("ReleaseDC", Ptr, 0, Ptr, hDC)
    Return hBM
}

class GDIplus   {
    __New()  {
        if !DllCall("GetModuleHandle", Str, "gdiplus", Ptr)
            DllCall("LoadLibrary", Str, "gdiplus")
        VarSetCapacity(si, A_PtrSize = 8 ? 24 : 16, 0), si := Chr(1)
        DllCall("gdiplus\GdiplusStartup", PtrP, pToken, Ptr, &si, Ptr, 0)
        this.token := pToken
    }
    __Delete()  {
        DllCall("gdiplus\GdiplusShutdown", Ptr, this.token)
        if hModule := DllCall("GetModuleHandle", Str, "gdiplus", Ptr)
            DllCall("FreeLibrary", Ptr, hModule)
    }
    BitmapFromHBitmap(hBitmap, Palette := 0)  {
        DllCall("gdiplus\GdipCreateBitmapFromHBITMAP", Ptr, hBitmap, Ptr, Palette, PtrP, pBitmap)
        return pBitmap
    }
    SaveBitmapToFile(pBitmap, sOutput, Quality=75)  {
        SplitPath, sOutput,,, Extension
        if Extension not in BMP,DIB,RLE,JPG,JPEG,JPE,JFIF,GIF,TIF,TIFF,PNG
            return -1
        DllCall("gdiplus\GdipGetImageEncodersSize", UIntP, nCount, UIntP, nSize)
        VarSetCapacity(ci, nSize)
        DllCall("gdiplus\GdipGetImageEncoders", UInt, nCount, UInt, nSize, Ptr, &ci)
        if !(nCount && nSize)
            return -2
        Loop, % nCount  {
            sString := StrGet(NumGet(ci, (idx := (48+7*A_PtrSize)*(A_Index-1))+32+3*A_PtrSize), "UTF-16")
            if !InStr(sString, "*." Extension)
                continue
            pCodec := &ci+idx
            break
        }
        if !pCodec
            return -3
        if RegExMatch(Extension, "i)^J(PG|PEG|PE|FIF)$") && Quality != 75  {
            DllCall("gdiplus\GdipGetEncoderParameterListSize", Ptr, pBitmap, Ptr, pCodec, UintP, nSize)
            VarSetCapacity(EncoderParameters, nSize, 0)
            DllCall("gdiplus\GdipGetEncoderParameterList", Ptr, pBitmap, Ptr, pCodec, UInt, nSize, Ptr, &EncoderParameters)
            Loop, % NumGet(EncoderParameters, "UInt")  {
                elem := (24+A_PtrSize)*(A_Index-1) + 4 + (pad := A_PtrSize = 8 ? 4 : 0)
                if (NumGet(EncoderParameters, elem+16, "UInt") = 1) && (NumGet(EncoderParameters, elem+20, "UInt") = 6)  {
                    p := elem+&EncoderParameters-pad-4
                    NumPut(Quality, NumGet(NumPut(4, NumPut(1, p+0)+20, "UInt")), "UInt")
                    break
                }
            }
        }
        if A_IsUnicode
            pOutput := &sOutput
        else  {
            VarSetCapacity(wOutput, StrPut(sOutput, "UTF-16")*2, 0)
            StrPut(sOutput, &wOutput, "UTF-16")
            pOutput := &wOutput
        }
        E := DllCall("gdiplus\GdipSaveImageToFile", Ptr, pBitmap, Ptr, pOutput, Ptr, pCodec, UInt, p ? p : 0)
        return E ? -5 : 0
    }
    DisposeImage(pBitmap)  {
        return DllCall("gdiplus\GdipDisposeImage", Ptr, pBitmap)
    }
}
return