sys_class_name is empty on Task?

[rako]

I extended Task on custom tables that I created. When creating new records on these custom tables, sys_class_name is empty on Task, though populated in the custom table. Why might that be?

var gr = new GlideRecord("Task");
gr.query();
while(gr.next()){
     gs.info(gr.sys_class_name);
}

yields no info.

var gr = new GlideRecord("custom_table_name");
gr.query();
while(gr.next()){
     gs.info(gr.sys_class_name);
}

prints out custom_table_name.

My understanding is that Task should hold sys_class_name, in order to reference the child to which it refers. Am I mistaken? Is there a read-restriction of some sort?

[rako]

Ha! Right you are. I guess it has been a long week. Thanks.