diff --git a/DESCRIPTION b/DESCRIPTION
index 7a3c389..67d7dfc 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: exams2sakai
 Title: Automatic Generation of Exams in R for 'Sakai'
-Version: 0.1
+Version: 0.2
 Authors@R: c(
 	person(given = "Fuensanta",
            family = "Arnaldos García",
diff --git a/NEWS.md b/NEWS.md
index ae707ba..2517711 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,11 @@
+# exams2sakai 0.2
+
+* Adding tolerance for Numeric Response Questions.
+
+* Set converter = "pandoc-mathjax" by default option.
+
+* Fixing bug 'owd not found' when zip=FALSE.
+
 # exams2sakai 0.1
 
 * First CRAN release version.
diff --git a/R/exams2sakai.R b/R/exams2sakai.R
index 9057ab6..d742d76 100644
--- a/R/exams2sakai.R
+++ b/R/exams2sakai.R
@@ -10,12 +10,8 @@ exams2sakai <- function(file, n = 1L, nsamp = NULL, dir = ".",
   sdescription = "Please answer the following question.", 
   maxattempts = 1, cutvalue = 0, solutionswitch = TRUE, zip = TRUE,
   points = NULL, eval = list(partial = TRUE, negative = FALSE),
-  converter = NULL, xmlcollapse = FALSE, ...)
+  converter = "pandoc-mathjax", xmlcollapse = FALSE, ...)
 {
-  ## default converter is "ttm" if all exercises are Rnw, otherwise "pandoc"
-  if(is.null(converter)) {
-    converter <- if(any(tolower(tools::file_ext(unlist(file))) == "rmd")) "pandoc" else "ttm"
-  }
   ## set up .html transformer
   htmltransform <- make_exercise_transform_html(converter = converter, ...)
 
@@ -337,12 +333,11 @@ exams2sakai <- function(file, n = 1L, nsamp = NULL, dir = ".",
     on.exit(setwd(owd), add = TRUE)
     setwd(test_dir)
     utils::zip(zipfile = zipname <- paste(name, "zip", sep = "."), files = list.files(test_dir))
+    if(dir == ".") {
+      dir = owd
+    }
   } else zipname <- list.files(test_dir)
 
-  if(dir == ".") {
-    dir = owd
-  }
-
   ## copy the final .zip file
   file.copy(file.path(test_dir, zipname), dir, recursive = TRUE)
 
@@ -606,29 +601,46 @@ make_itembody_sakai <- function(rtiming = FALSE, shuffle = FALSE, rshuffle = shu
                 if(fix_num) {
                   correct_num[[i]] <- c(correct_num[[i]],
                     paste('<varequal respident="', ids[[i]]$response,
-                      '" case="No"><![CDATA[', if(!is.null(digits)) {
-                      format(round(solution[[i]][j], digits), nsmall = digits)
-                      } else solution[[i]][j],
+                      '" case="No"><![CDATA[', solution[[i]][j] - max(tol[[i]]), '|', 
+                      solution[[i]][j] + max(tol[[i]]),
                       ']]></varequal>', sep = "")
                   )
                 }
-                wrong_num[[i]] <- paste(
-                  paste(c('\n<or>', paste('<varequal respident="', ids[[i]]$response,
-                    '" case="No"><![CDATA[', if(!is.null(digits)) {
-                      format(round(solution[[i]][j], digits), nsmall = digits)
-                    } else solution[[i]][j],
-                    ']]></varequal>\n', sep = "")), collapse = '\n', sep = ''),
-                  '<and>\n',
-                  paste('<vargte respident="', ids[[i]]$response, '"><![CDATA[',
-                    solution[[i]][j] - max(tol[[i]]),
-                    ']]></vargte>\n', sep = ""),
-                  paste('<varlte respident="', ids[[i]]$response, '"><![CDATA[',
-                    solution[[i]][j] + max(tol[[i]]),
-                    ']]></varlte>\n', sep = ""),
-                  '</and>',
-                  '\n</or>',
-                  collapse = '\n', sep = ''
-                )
+                if (tol[[i]] == 0) {
+                  wrong_num[[i]] <- paste(
+                    paste(c('\n<or>', paste('<varequal respident="', ids[[i]]$response,
+                      '" case="No"><![CDATA[',  solution[[i]][j] ,
+                      ']]></varequal>\n', sep = "")), collapse = '\n', sep = ''),
+                    '<and>\n',
+                    paste('<vargte respident="', ids[[i]]$response, '"><![CDATA[',
+                      solution[[i]][j],
+                      ']]></vargte>\n', sep = ""),
+                    paste('<varlte respident="', ids[[i]]$response, '"><![CDATA[',
+                      solution[[i]][j],
+                      ']]></varlte>\n', sep = ""),
+                    '</and>',
+                    '\n</or>',
+                    collapse = '\n', sep = ''
+                  )
+                }
+                else {
+                  wrong_num[[i]] <- paste(
+                    paste(c('\n<or>', paste('<varequal respident="', ids[[i]]$response,
+                      '" case="No"><![CDATA[',  solution[[i]][j] - max(tol[[i]]), '|', 
+                      solution[[i]][j] + max(tol[[i]]),
+                      ']]></varequal>\n', sep = "")), collapse = '\n', sep = ''),
+                    '<and>\n',
+                    paste('<vargte respident="', ids[[i]]$response, '"><![CDATA[',
+                          solution[[i]][j] - max(tol[[i]]),
+                          ']]></vargte>\n', sep = ""),
+                    paste('<varlte respident="', ids[[i]]$response, '"><![CDATA[',
+                          solution[[i]][j] + max(tol[[i]]),
+                          ']]></varlte>\n', sep = ""),
+                    '</and>',
+                    '\n</or>',
+                    collapse = '\n', sep = ''
+                  )
+                }
               }
             )
           }
diff --git a/README.md b/README.md
index 876b305..d8c70f0 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ library( exams2sakai )
 
 myexam <- list( "boxplots", "regression", "scatterplot", "relfreq" )
 
-ex1 <- exams2sakai( myexam, n = 1, converter="pandoc-mathjax",
+ex1 <- exams2sakai( myexam, n = 1,
                     verbose = TRUE,
                     dir = ".", points = c( 1 ) )
 
@@ -74,6 +74,7 @@ extype: mchoice
 extype: num                   # Only working with one solution
 exsingle: TRUE                # mcss
 exsingle: FALSE               # mca
+extol: 0.1                    # Tolerance for Numeric Response questions
 exsolution: 0100001
 exshuffle: 5
 exextra[randomize]: TRUE      # Randomize answers
diff --git a/man/exams2sakai.Rd b/man/exams2sakai.Rd
index 16900a7..0cc2077 100644
--- a/man/exams2sakai.Rd
+++ b/man/exams2sakai.Rd
@@ -22,7 +22,7 @@
     maxattempts = 1, cutvalue = 0, solutionswitch = TRUE,
     zip = TRUE, points = NULL,
     eval = list(partial = TRUE, negative = FALSE),
-    converter = NULL, xmlcollapse = FALSE, \dots)
+    converter = "pandoc-mathjax", xmlcollapse = FALSE, \dots)
 
   make_itembody_sakai(rtiming = FALSE, shuffle = FALSE,
     rshuffle = shuffle, minnumber = NULL, maxnumber = NULL,
@@ -111,8 +111,7 @@
     correct solutions for numeric exercises/answers as well as to obtain results when archiving tests.
     Note that this is a workaround, which works e.g. within OLAT.}
   \item{converter}{character. Argument passed on to \code{make_exercise_transform_html}.
-    The default for \code{converter} is set to \code{"ttm"} unless there are Rmd
-    exercises in \code{file} where \code{"pandoc"} is used.}
+    The default for \code{converter} is set to \code{"pandoc-mathjax"}}
   \item{xmlcollapse}{logical or character. Should line breaks be collapsed in the XML
     code. If \code{TRUE} everything is collapsed with spaces (\code{" "}) but other collapse
     characters could be supplied.}
@@ -231,7 +230,7 @@ myexam <- list( "boxplots", "regression", "scatterplot", "relfreq" )
 dir.create(mydir <- tempfile())
 
 ## generate Sakai quiz in temporary directory
-exams2sakai( myexam, n = 1, converter="pandoc-mathjax",
+exams2sakai( myexam, n = 1,
                     verbose = TRUE,
                     dir = "mydir", points = c( 1 ) )