hitTestObject checking collision with pattern

I've got an enter frame event that checks collision between mouse cursor and objects on the screen. The problem. Every object has a name, however I want to detect collisions between the cursor and objects with a pattern name.

For example, on the screen there are five objects called

XObj1

AObj2

XObj3

XObj4

AObj5

I want to check collision only between mouse cursor and every object that starts with X or A.

The solution I had doesn't work out the way I expected because it runs a loop and returns array with an index of these objects. I would like to have a straightforward approach like

MouseCursor.hitTestObject(stage.getChildByName(Pattern));

But I don't know if it's possible.

Thanks in advance