Flash :: Accessing Movieclips Within Movieclip Using For Statement?

I am trying to access movieclips within my movieclip using a for statement. To try and make this clear, here is how it looks at the moment:

sections = Holder movieclip where dtf_sections is placed, as well as other clips that are needed.

dtf_sections = Where all the title movieclips are placed that are going to be used when called. Placed in here to make it easier to move, within sections

title = Movieclip that contains the text that needs to be changed, within dtf_sections

Here is my code that works:

sections.dtf_sections.title1.dtf_title.text = "Section 1"

There are upto 10 titles within dtf_sections. So, what I thought would work is this:

for(var i:uint=1; i<10; i++){
sections.dtf_sections.["title"+String(i)].dtf_title.text = "Section" +(i)
}

The reason why they are within the movieclips is masking, and appearing at different times.