diff --git a/R/load_meta_functions.R b/R/load_meta_functions.R
index 7741bf8..879bcdc 100644
--- a/R/load_meta_functions.R
+++ b/R/load_meta_functions.R
@@ -1,6 +1,7 @@
 #' create a JSON File
 #'
 #' @param path_data Path to raw file or directory containing raw files.
+#' @param silent Error and informational output is hidden if FALSE.
 #'
 #' @return JSON object containing the meta data of the raw files.
 #'
@@ -20,7 +21,7 @@
 #'  }
 #' @export
 
-generate_json <- function(path_data)
+generate_json <- function(path_data, silent = FALSE)
 {
   new_file <- tempfile()
   path_MARMoSET_exe <- system.file(
@@ -34,6 +35,7 @@ generate_json <- function(path_data)
                                  msg = "path_data is not a file or directory!",
                                  severity = "stop",
                                  what = "any")
+  assertive.types::assert_is_a_bool(silent)
 
   if(!assertive.reflection::is_windows())
   {
@@ -41,7 +43,7 @@ generate_json <- function(path_data)
   }
 
   system(command = paste(path_MARMoSET_exe, paste0('"',path_data, '"'), new_file),
-         intern  = T)
+          show.output.on.console = !silent)
 
   json <- jsonlite::fromJSON(new_file)
 
diff --git a/R/sysdata.rda b/R/sysdata.rda
new file mode 100644
index 0000000..ba1d347
Binary files /dev/null and b/R/sysdata.rda differ
diff --git a/R/term_matching_functions.R b/R/term_matching_functions.R
index ac8fa5b..61681f1 100644
--- a/R/term_matching_functions.R
+++ b/R/term_matching_functions.R
@@ -85,7 +85,7 @@ one_group_match_terms <- function(flat_json, term_matching_table, group_number)
     }
   }
 
-  meta_data_table %<>% dplyr::mutate(Value = Value %>% stringi::stri_replace_first_fixed('―','-'))
+  meta_data_table %<>% dplyr::mutate(Value = Value %>% stringi::stri_replace_first_fixed('\U2015','-'))
 
   return(meta_data_table)
 }