Cocoa + Automator : service to generate text files not working

[Decoder]

I am trying to create an automator service using cocoa, which will simply create a text file with the name of files selected, at the same path, for which I wrote below code:

- (id)runWithInput:(id)input fromAction:(AMAction *)anAction error:(NSDictionary **)errorInfo

{

// Add your code here, returning the data to be passed to the next action.

    NSArray *fileURLs = (NSArray *)input;

    

    size_t count = [fileURLs count];

    

    dispatch_apply(count, dispatch_get_global_queue(0, 0), ^(size_t i) {

        NSURL *fileURL = [fileURLs objectAtIndex:i];

        

        NSData *data = [@"some crude text ;)" dataUsingEncoding:NSUTF8StringEncoding]; 

        

        //changing extension of file

        NSString *filePathWithoutExtension = [[fileURL path] stringByDeletingPathExtension];

        NSString *filePathWithNewExtension = [[NSString alloc] initWithFormat:@"%@.%@",filePathWithoutExtension,@"txt"];

        

        [data writeToFile:filePathWithNewExtension atomically:NO];

        

    });

    

    // no need to return anything

return nil;

}

I added below values in info.plist file:

AMAccepts: Types: Item 0: com.apple.cocoa.url

AMCategory: AMCategoryPhotos

I imported the action to the automator, and added it to the default service template.

The options selected in input template are:

1. Service receives selected: URLs

2. in: Finder

3. Input is: only URLs

My problem is the service created is not appearing when I am trying to right click a file in finder.

Can anyone suggest if I missed anything?