I am looking for a postgraduate course related to 'Computer Science' at the 'National and Kapodistrian University of Athens'. Use the search bar to find relevant courses. After performing the search, apply filters to narrow down the results to 'Postgraduate' level courses from the 'National and Kapodistrian University of Athens'. Finally, state the total number of courses found after applying both filters.
Navigate to 'opencourses.gr'. Type 'Επιστήμες Υπολογιστών, Πληροφορικής, Τηλεπικοινωνιών' (Computer Science, Informatics, Telecommunications) into the search bar (ID 17). Click the search button (ID 19). On the search results page, locate and click the checkbox for 'Μεταπτυχιακό' (Postgraduate) under 'ΒΑΘΜΙΔΑ ΜΑΘΗΜΑΤΟΣ' (Course Level). Locate and click the checkbox for 'Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών' (National and Kapodistrian University of Athens) under 'ΑΚΑΔΗΜΑΪΚΟ ΙΔΡΥΜΑ' (Academic Institution). Identify and state the total number of courses displayed after both filters have been applied.
The agent successfully navigates to the homepage. The agent successfully uses the search bar with the specified subject. The agent successfully applies the 'Postgraduate' filter. The agent successfully applies the 'National and Kapodistrian University of Athens' filter. The agent states the correct number of courses found after applying both filters.