TestComplete unable to recognize child objects in an Excel Macro file

Hi,

I am new to this forum and I am new to TestComplete as well.

I am running a Excel macro application in which, I have difficult in identifying the objects (which are image buttons basically) inside a particular group or a frame. TestComplete identify the Frame using object spy but unable to identify the image button inside the frame. 

Is there any plugin that I should use for Excel marco? Or any suggestion?

Thanks!