Changing ViewCriteria Operators on fly - Used to filter TreeTable elements

In this scenario I developed a search form that would filter treeTable elements based on parent child view access link.

I have Parent viewCriteria used in the page as AF:Query along with TreeTable, There is also a child viewCriteria applied to the child view, the parent view has the same query in the exists clause to filter parent items.

Parent View:

Child View:

Then use this code to filter and change view Criteria operators by passing the change of the operators from the parent view criteria to the detail one: