<!--
The actual data, again.
//-->
- <column-callback-data type="string" value="grade_parent_id" callback="generateAdminGradeSelectionBox" />
+ <column-callback-data type="string" value="grade_parent_id" callback="generateAdminGradeDataSelectionBox" />
<!--
More parameters, remember that the first parameter is always given
and that it is the data from column.