OOP function into a variable

[arrangements]

How can I get this to work:

$animepage = $Template->exe_template('anime', $animearray);

Inside class.php:

	function exe_template($templatename, $arrayvar)
	{
		$template = $this->buff_template($templatename);
		$template = $this->parse_variables($template, $arrayvar);
		$template = $this->parse_tags($template);
		return $template;
	}

because when I place the above variable it prints $Template->exe_template('anime', $animearray); even though I didn't tell it too!~ and it doesn't place it into the variable!!!