Change the text on the "Take Course" button based on membership

I am trying to change the text on the "Take Course" button based on membership/log-in status using the built in filter hook for WPLMS. I need to provide a different message for different member types and log-in statuses. I know that the hook to use is 'wplms_take_this_course_button_label', but I don't know how to use hooks very well. Based on THIS POST by Paid Memberships Pro, this is what I came up with: if(pmpro_hasMembershipLevel('1')) { remove_filter( 'wplms_take_this_course_button_label',('TAKE THIS COURSE','vibe'),$course_id); apply_filters( 'wplms_take_this_course_button_label',('LABEL FOR LEVEL 1','vibe'),$course_id); } if(pmpro_hasMembershipLevel('2')) { remove_filter( 'wplms_take_this_course_button_label',('TAKE THIS COURSE','vibe'),$course_id); apply_filters( 'wplms_take_this_course_button_label',('LABEL FOR LEVEL 2','vibe'),$course_id); } if(pmpro_hasMembershipLevel('3')) { remove_filter( 'wplms_take_this_course_button_label',('TAKE THIS COURSE','vibe'),$course_id); apply_filters( 'wplms_take_this_course_button_label',('LABEL FOR LEVEL 3','vibe'),$course_id); } else { remove_filter( 'wplms_take_this_course_button_label',('TAKE THIS COURSE','vibe'),$course_id); apply_filters( 'wplms_take_this_course_button_label',('MY DEFAULT NON-MEMBER LABEL','vibe'),$course_id); } I know there is a way to do this using the hook the correct way. I have a child theme, with its own functions.php file too... Please help.