Task report - cicontains prompt for parent task name

Hi All,

I've got a task report, to which I'd like to add a custom cicontains prompt to filter for only those tasks, whose parent includes the prompted text in the name.

The parent tasks contain months in their names and need to give users a simple prompt to select a month:

I'm using the simple text mode filter of "parent:name=july parent:name_Mod=cicontains", but even though the parent name contains this word, I don't get any results. 

It seemed like such a simple thing, but I'm at a loss on why it doesn't work!

Thanks for any help/ideas!

Kuba