HTTP Respond problem

[0000]

This is a part of code:

$OHTTP = ObjCreate("winhttp.winhttprequest.5.1")
$id = 100
For $i=1 to $id Do Step 1
$OHTTP.Open("POST", "http://online.game/builder.php")
$OHTTP.Send("build=" & $i & "&agree=1")
Next

So this script working really fast, but there is one problem. Sometimes Online-Game doesn't respond in time (some delay) because of that program crashes with error: 'HTTP-Respond-error...'

Is there any way to check if Http-server send respond to program and program got it?

Thanks, Mr.0000