Rename a group of existing files in foreach loop

[larrydavid]

Hi,

I have already copied the files into a folder, great. Now I want to rename them. Created a foreach loop, set it to the same folder where the files exist, then added a File System Task where I have an expression to replace part of the filename. Can someone please tell me what I am missing here besides my hair which I've pulled out over this seemingly simple task?

Thanks,
Larry