uppercase not lowercase in uppercase process

workflow/main.nf

@@ -27,7 +27,7 @@ process uppercase {
     file "${story.name}.uppercase" into uppercased
 
     """
-    cat "$story" | tr "[A-Z]" "[a-z]" > "${story.name}.uppercase"
+    cat "$story" | tr "[a-z]" "[A-Z]" > "${story.name}.uppercase"
     """
 
 }