Open all jsl files in a folder, find and replace text, save and close files

[#1]

I want to write a script to open many jsl files in a folder. In each jsl file, I need to find a text and replace it with another text. Save each file and close it before going onto the next file in the folder. I tried to use "substitute" but did not work. Appreciate all the help!

//folder contains 224 jsl scripts
folderID = "T:\JMP_SCRIPTS\Openfiles n update\test\";

Files = Files In Directory(FolderID);

For(i = 1, i <= N Items(Files), i++, 

	FileID = Files[i];

//Open jsl file
	openFile = Open(folderID || FileID);

	subdt = Substitute(openFile, "99@wefghynKm0r3", "hihi");

	openFile << Save(folderID || FileID);
	Close(openFile, No Save);


);// End FOR loop

[#2 · Accepted solution]

Look into using 

     Load Text File()

and

     Save Text File()

rather than using Open().

Load Text File() will bring the complete file into a single literal string variable and you will then be able to use Substitute() for the string and then save it back using the Save Text File.

[#3]

Facinating, thanks! It works for me!