public function setParamByKey($setKey, $setVal)
    {
        $this->params = $this->setArrayElementByKey($this->params, $setKey, $setVal);
    }
public function setParamByKey($setKey, $setVal)
    {
        $this->params = $this->setArrayElementByKey($this->params, $setKey, $setVal);
    }
public function setParamByKey ( $ setKey , $ setVal ) { $ this -> params = $ this -> setArrayElementByKey ( $ this -> params , $ setKey , $ setVal ) ; }
set value in params by key

$setKey example: 'key:1:one_more_key' => $params['key'][1]['one_more_key']
$setKey example: 'key:a1' => $params['key']['a1']

@param string $setKey
@param mixed $setVal
set value in params by key