TheIconic\Tracking\GoogleAnalytics\Analytics::setParameter PHP Method

    private function setParameter($methodName, array $methodArguments)
    {
        $parameterClass = substr($methodName, 3);
        $fullParameterClass = $this->getFullParameterClass($parameterClass, $methodName);
        $parameterIndex = $this->getIndexFromArguments($methodArguments);
        /** @var SingleParameter $parameterObject */
        $parameterObject = new $fullParameterClass($parameterIndex);
        if (!isset($methodArguments[0])) {
            throw new \InvalidArgumentException('For Analytics object, you must specify a value to be set for ' . $methodName);
        } else {
            $parameterObject->setValue($methodArguments[0]);
        }
        $this->singleParameters[$parameterObject->getName()] = $parameterObject;
        return $this;
    }