public function getImagePath($ImageManager_id, $width = 400, $height = 400, $thumbnailMode = "outbound") {
		//default return
		$return = null;
		$mImageManager = ImageManager::findOne($ImageManager_id);

		//check if not empty
		if ($mImageManager !== null) {

			$sMediaPath = null;
			if ($this->mediaPath !== null) {
				$sMediaPath = $this->mediaPath;
			}

			$sFileExtension = pathinfo($mImageManager->fileName, PATHINFO_EXTENSION);
			//get image file path
			$sImageFilePath = $sMediaPath . '/' . $mImageManager->id . '_' . $mImageManager->fileHash . '.' . $sFileExtension;
			//check file exists
			if (file_exists($sImageFilePath)) {
				$return = \Yii::$app->imageresize->getUrl($sImageFilePath, $width, $height, $thumbnailMode, null, $mImageManager->fileName);
			} else {
				$return = null; //isset(\Yii::$app->controller->module->assetPublishedUrl) ? \Yii::$app->controller->module->assetPublishedUrl. "/img/img_no-image.png" : null;
			}
		}
		return $return;
	}