CREATE TABLE table_name_33 (number_of_seasons_in_liga_mx INTEGER, club VARCHAR, number_of_seasons_in_top_division VARCHAR)
What is the highest Number of seasons in Liga MX for Club cruz azul, when their season in the top division is higher than 68?
SELECT MAX(number_of_seasons_in_liga_mx) FROM table_name_33 WHERE club = "cruz azul" AND number_of_seasons_in_top_division > 68