Autoit Face Detection

#include-once
#include <_httprequest.au3>
#include <GDIPlus.au3>
#include <String.au3>
$key = 'a17062b012c34f0d9594955341feb049'
Func FaceDetection($FileDir)
$apiurl = 'https://api-us.faceplusplus.com/facepp/v3/detect?api_key=FGf2js-mqbFAuBcyiU0elKuWCCnO0y8K&api_secret=mexzR3twAUh8F0uRqsAoUZFKp3Sfo6bL'
Local $aForm = [['$image_file', $FileDir]]
$request = _HttpRequest(2,$apiurl,$aForm)
Local $Return[4]=[Int(_StringBetween($request,'"left":',',')[0]),Int(_StringBetween($request,'"top":',',')[0]),Int(_StringBetween($request,'"width":',',')[0]),Int(_StringBetween($request,'"height":','}')[0])]
Return $Return
EndFunc
Func DrawRectanglesLineImage($sFile, $nX, $nY, $nWidth, $nHeight,$OutputName='Output.jpg')
_GDIPlus_Startup()
Global $hImage = _GDIPlus_ImageLoadFromFile($sFile)
If Not $hImage Or @error Then Exit + (_GDIPlus_Shutdown()) ;exit when the image is not supported by GDI+ (strange syntax but it works :-)
Global $aDim = _GDIPlus_ImageGetDimension($hImage)
Global Const $hCanvas = _GDIPlus_ImageGetGraphicsContext($hImage) ;get the canvas
_GDIPlus_GraphicsSetSmoothingMode($hCanvas, $GDIP_SMOOTHINGMODE_HIGHQUALITY) ;set antialiasing for the canvas to increase quality
Global Const $hPen = _GDIPlus_PenCreate(0xFFFF0000) ;create a red pen (ARGB format)
_GDIPlus_PenSetColor($hPen, 0xFF0000FF) ;change the pen color to blue
_GDIPlus_GraphicsDrawRect($hCanvas, $nX,$nY,$nWidth,$nHeight, $hPen) ;draw a rectangle in the center
Global Const $sFileSave = @ScriptDir & "\"&$OutputName
_GDIPlus_ImageSaveToFile($hImage, $sFileSave) ;save the modified image
;clean up the gdiplus resources
_GDIPlus_PenDispose($hPen)
_GDIPlus_GraphicsDispose($hCanvas)
_GDIPlus_ImageDispose($hImage)
_GDIPlus_Shutdown()
EndFunc