xcode - Using sed to find a string in one file and replace with text in another file in Xcode

Question

shell: /bin/tcsh

I'm attempting to search for a string in a Cocos2D tmx file and replace it with text from another file.

Before the touch commands in Run Script, I have the following:

sed -i '' 's{<tileset firstgid="1.*<layer name="background"{Resources/maps_sideScrolling/tileProperties.txt{g' Resources/maps_sideScrolling/ruinsItemCave2.tmx;

I'm fairly certain the file ruinsItemCave2.tmx is found, because if I change the file path I get an error when I build the project. As of now, ruinsItemCave2.tmx is not affected in any way.

Eventually I will want to change ruinsItemCave2 to a wildcard filename so it affects every file name, though I'm not sure how to write Resources/maps_sideScrolling/*.tmx the proper way.

I also know that without even writing a file path of tileProperties.txt, but just writing "test" does nothing to my ruinsItemCave2 file, so I can't even get that far as of now. Does it have to do with using tcsh?