So I have managed to get the file uploader working but I do not know how to link the resulting file with a an object field "Image". I can see the file appearing on the server but I can not establish a link between the file and dataobject instance field. I have tried using uploadfield but it just crashes so I decided to stick with a filefield.

Forgot to call write.......

Nope still a problem,

                        if(isset($data["LIDs"])) {
                                echo $member->LinkToID->URL."|";
                                $upload = new Upload();
                                $f = new Image();
                                $f->OwnerID = $member->ID;
                                $f->setFilename("IDS_".$member->ID);
                                $upload->loadIntoFile($data["LIDs"],$f,"IDS");
                                $f->write();
                                if($upload->isError()){
                                        var_dump($up->getErrors());
                                }else{
                                        Filesystem::sync();
                                        $member->LinkToID = $f;
                                        echo $member->LinkToID->URL."|";
                                        echo $f->URL."|";
                                        echo "|";
                                        $member->write();
                                        echo $member->LinkToID->URL."|";
                                }
                        }

File uploads, It seem to link but when I try write it is not saved afterwards....

Hi Liutauras, if you just do this (for now) does the image upload with the original filename and do you get a record in the DB?

if(isset($data["LIDs"])) {
	$upload = new Upload();
	$image = new Image();
	$upload->loadIntoFile($data["LIDs"],$image,"IDS");
} else {
	echo "No File Data";
}

The image get uploaded under files tabs in the admin panel and if I use echo $image->ID; I get the id of the file so it is stored in db too.

This is a wild guess but have you tried image->Link?

Just tried the ->Link, didn't work. Thanks for suggestion cause I'm of ideas on this one.