public function storeValue($value, $type = 'default', $inputData = null)
	{
		$db = JFactory::getDbo();

		$mainCatId       = $value['main'];
		$secondaryCatIds = explode(",", $value['secondary']);
		$secondaryCatIds = array_unique($secondaryCatIds);

		if (is_array($secondaryCatIds) && count($secondaryCatIds) > 0)
		{
			foreach ($secondaryCatIds AS $i => $secondaryCatId)
			{
				if (!is_numeric($secondaryCatId) || $secondaryCatId <= 0 || $secondaryCatId == $mainCatId)
				{
					unset($secondaryCatIds[$i]);
				}
			}
		}

		if (!isset($this->doc->cat_id) || !$this->doc->cat_id)
		{
			
			$saveMainCat = JUDownloadHelper::addCategory($this->doc_id, $mainCatId, 1);
			if (!$saveMainCat)
			{
				return false;
			}
		}
		else
		{
			
			if ($this->doc->cat_id != $mainCatId)
			{
				$query = "UPDATE #__judownload_documents_xref SET cat_id = " . $mainCatId . " WHERE doc_id= " . $this->doc_id . " AND main = 1";
				$db->setQuery($query);
				$db->execute();
			}

			
			
			$secondaryCatIdsDB     = $this->getSecondaryCategoryIds($this->doc_id);
			$removeSecondaryCatIds = array_diff($secondaryCatIdsDB, $secondaryCatIds);
			if ($removeSecondaryCatIds)
			{
				$query = "DELETE FROM #__judownload_documents_xref WHERE (doc_id= " . $this->doc_id . " AND main=0 AND cat_id IN (" . implode(",", $removeSecondaryCatIds) . "))";
				$db->setQuery($query);
				$db->execute();
			}
		}

		
		foreach ($secondaryCatIds AS $key => $catId)
		{
			$query = "SELECT id FROM #__judownload_documents_xref WHERE doc_id = " . $this->doc_id . " AND cat_id = $catId AND main = 0";
			$db->setQuery($query);
			$itemId = $db->loadResult();
			if ($itemId)
			{
				$query = "UPDATE #__judownload_documents_xref SET ordering = " . ($key + 1) . " WHERE id = " . $itemId;
				$db->setQuery($query);
				$db->execute();
			}
			else
			{
				
				JUDownloadHelper::addCategory($this->doc_id, $catId, 0, $key + 1);
			}
		}

		

		return true;
	}