If else not working in phpmyadmin trigger

So I was working with MySQL triggers in phpmyadmin. Here's my trigger for table scorm_track:

UPDATE userbatch 
LEFT JOIN scorm_track 
ON      
        (userbatch.user_id = scorm_track.userid)
LEFT JOIN trainingobject
ON      
        (scorm_track.tobjid = trainingobject.id)
IF scorm_track.element = 'cmi.core.lesson_status' THEN
    SET userbatch.to_completion = scorm_track.value,
        userbatch.trainingcompleted = scorm_track.timemodified;
ELSEIF scorm_track.element = 'cmi.core.score.raw' THEN
    SET userbatch.comment = scorm_track.value;
ENDIF;
WHERE (userbatch.batch_id = trainingobject.batchid) AND 
        scorm_track.id=NEW.id AND 
        scorm_track.element = 'cmi.core.lesson_status' OR scorm_track.element = 'cmi.core.score.raw'

But it shows the following error: "MySQL said #1064 - You have an error in your SQL syntax..."

This problem started occurring after I added the IF ELSE statements. It was working fine before. Can anyone suggest why this maybe occuring?