Not working: if is_page()

Hey!

I’m trying add header facebook og:title for my theme.

That’s the code:

add_action( 'wp_head', 'rotisoft_meta_cim' );
function rotisoft_meta_cim()
{
	echo '<meta property="og:title" content="';

if ( is_page('117') ) {

	echo "Blog Site Title";
}

elseif ( is_front_page() ) {

    bloginfo( 'name' );
	echo " | MySyite description";
} 

elseif ( is_page() ) {

	echo "MySite | ";
	echo get_the_title();

} elseif ( is_category() ) {

	echo "Mysite Category: ";
	single_cat_title();

} elseif ( is_tag() ) {

	echo "MySite tag: ";
	single_tag_title('');

} elseif ( is_single() ) {

    bloginfo( 'name' );
	echo " | ";
	the_title();

} else {

    bloginfo( 'name' );
	echo " | ";
	the_title();

}
	echo '">' . "\n" ;
}

The problem: When i’m look the 117 id’s site, the title is the latest blog post title. (Don’t the _Blog Site Title_.)

I’m testing thats codes:
if ( is_page(117,'blog','Blog') )

I’m read that page: https://codex.www.ads-software.com/Function_Reference/is_page
But, i’m don’t know, what is the problem. ??

Thx for help!