I am trying to submit a grade for a student using the core_grades_update_grades function. The correct grade value for the course, module and student is posted successfully. However, the feedback string doesn't show. Here is the URL I have used:
https://abc.com/webservice/rest/server.php?wstoken=[token]&wsfunction=core_grades_update_grades&moodlewsrestformat=json&source=ap&courseid=19&component=mod_url&activityid=817&itemnumber=0&itemdetails[itemname]=Activity&itemdetails[idnumber]=0&grades[studentid]=19&grades[grade]=79&grades[str_feedback]= well+done+mateCan you help with this please?