diff --git a/converttomarkdown.js b/converttomarkdown.js
index 8d325e4..ba067cf 100644
--- a/converttomarkdown.js
+++ b/converttomarkdown.js
@@ -167,7 +167,8 @@ function ConvertToMarkdown() {
 
         //Checking if the common folder is present in user's google drive. If not creating it.
         if (checkIfFolderExists(commonFolderName)) {
-            commonFolder = DriveApp.getFolderByName(commonFolderName);
+            folderIter = DriveApp.getFoldersByName(commonFolderName);
+            commonFolder = folderIter.next();
         } else {
             commonFolder = DriveApp.createFolder(commonFolderName);
         }
@@ -182,9 +183,9 @@ function ConvertToMarkdown() {
         //Checking if MD file with same name is already present inside that folder. If present it will override the older file. If not it will create the new file.
         file = checkIfFileExists(folder, DocumentApp.getActiveDocument().getName() + ".md");
         if (file) {
-            file.replace(text);
+            file.setContent(text);
         } else {
-            file = DriveApp.createFile(DocumentApp.getActiveDocument().getName() + ".md", text, 'text/plain');
+            file = folder.createFile(DocumentApp.getActiveDocument().getName() + ".md", text, 'text/plain');
             folder.addFile(file);
         }
 
@@ -257,9 +258,11 @@ function downloadMdFile() {
 
 /* This function checks if there is a folder as given in the parameter exists in Google Drive */
 function checkIfFolderExists(folderName) {
-    var exist = true;
+    var exist = false;
     try {
-        var testFolder = DriveApp.getFolderByName(folderName);
+        var testFolder = DriveApp.getFoldersByName(folderName);
+        if testFolder.hasNext()
+            exist = testFolder.next()
     } catch (err) {
         exist = false;
     }
@@ -303,12 +306,12 @@ function checkIfFolderExistsInParent(parentFolder, folderName) {
         if (folderCollection.length == 0)
             exist = false;
         else {
-            for (var i = 0; i < folderCollection.length; i++) {
-                if (folderCollection[i].getName() == folderName) {
-                    exist = folderCollection[i];
-                    return exist;
-                }
-            }
+           while (folderCollection.hasNext()) {
+             childFolder = folderCollection.next()
+             if (childFolder.getName() == folderName) {
+               return childFolder
+             }
+           }
         }
         exist = false;
     } catch (err) {
@@ -318,14 +321,19 @@ function checkIfFolderExistsInParent(parentFolder, folderName) {
 }
 /* This function checks if there is a file as given in the parameter exists in Google Drive */
 function checkIfFileExists(folder, fileName) {
-    var exist = true;
+    var exist = false;
+    
     try {
-        //var testFolder = DriveApp.getFolder(folderName);
-        var testFile = folder.find(fileName);
-        if (testFile.length > 0)
-            exist = testFile[0];
-        else
-            exist = false;
+        var testFileIter = folder.getFilesByName(fileName);
+        if (!testFileIter.hasNext())  {
+            return false
+        }
+        var testFile = testFileIter.next()
+        if (testFile.getSize() > 0) {
+            exist = testFile;
+        } 
+        Logger.log("file size not > 0 : " + testFile.getSize());
+        exist = false;
     } catch (err) {
         exist = false;
     }