private function insertCustomSkill($project_id, $skill_name)
 {
     // Create an object for skill
     $objSkill = new skill();
     // First check if it a duplicate skill, if yes, add that skill in the project table
     $skill_id = $objSkill->getSkillId($skill_name);
     if ($skill_id <= 0) {
         // It is a new skill and not fond in DB, so insert it
         $skill_id = $objSkill->insertSkill($skill_name);
     } else {
         // If skill_id>0, use it to insert below...
         // No need to do anything, this block is just for info
     }
     $result = $this->insertProjectSkill($project_id, $skill_id);
     return $result;
 }