Resizing multiple frames

I’m trying to resize multiple frames using the edit multiple frames tool, but it doesn’t seem to want to resize it.
I’m selcting it, the using the free transform tool. And if it does work, it only does 10 then refuses to do any more, even if I break it down to smaller selections of frames.

Does this tool only work for a certain number of frames and is there an easier way to do this?