diff --git a/scripts/buld.py b/scripts/buld.py
index 8586fdd..d94e727 100644
--- a/scripts/buld.py
+++ b/scripts/buld.py
@@ -28,18 +28,21 @@ build_cmd_pattern = '{0} -v build "--configuration:{1}" "--target:Build" {2}'
 # print('finished with return code: {0}'.format(ret_code))
 
 sln_dir = os.path.dirname(settings.sln_path)
-sln_file = open(settings.sln_path)
-sln_file_content = sln_file.read()
+# sln_file = open(settings.sln_path)
+# sln_file_content = sln_file.read()
 # print(sln_file_content)
 
-project_description_re = re.compile(r' = "(?P<project_name>\S+)", "(?P<project_rel_path>[\S\\]+csproj)"')
-match_iter = project_description_re.finditer(sln_file_content)
+# project_description_re = re.compile(r' = "(?P<project_name>\S+)", "(?P<project_rel_path>[\S\\]+csproj)"')
+# match_iter = project_description_re.finditer(sln_file_content)
 
-project_descriptions = [m.groupdict() for m in match_iter]
-for project_description in project_descriptions:
-	rel_path = project_description['project_rel_path'].replace('\\', '/')
-	abs_path = os.path.join(sln_dir, rel_path)
-	build_cmd_text = build_cmd_pattern.format(settings.mdtool, sln_config, abs_path)
-	print(build_cmd_text)
-	ret_code = call(build_cmd_text, shell=True)
-	print('finished with return code: {0}'.format(ret_code))
+# project_descriptions = [m.groupdict() for m in match_iter]
+# for project_description in project_descriptions:
+# 	rel_path = project_description['project_rel_path'].replace('\\', '/')
+# 	abs_path = os.path.join(sln_dir, rel_path)
+# 	build_cmd_text = build_cmd_pattern.format(settings.mdtool, sln_config, abs_path)
+# 	print(build_cmd_text)
+# 	ret_code = call(build_cmd_text, shell=True)
+# 	print('finished with return code: {0}'.format(ret_code))
+
+# instruments.CreateOrRestoreFromBackup(sln_dir, settings.files_for_backup)
+# instruments.DeleteBackups(sln_dir, settings.files_for_backup)
\ No newline at end of file
diff --git a/scripts/instruments.py b/scripts/instruments.py
index 4ed1ad5..c73764b 100644
--- a/scripts/instruments.py
+++ b/scripts/instruments.py
@@ -1,18 +1,52 @@
 import shutil
 import os
 
-def CreateOrRestoreFromBackup(base_dir, relative_path_to_files):
-	
-	for rel_path in relative_path_to_files:
+def MapToBackupName(origin_path):
 
-		abs_path = os.path.join(base_dir, rel_path)
-		abs_path_backup = "{0}.build_backup".format(os.path)
-		
-		if os.path.exists(abs_path_backup):
+	backup_path = "{0}.build_backup".format(origin_path)
+	return backup_path
+
+def FetchAbsOriginBackupInfo(base_dir, rel_path_to_origin_files):
+
+	abs_path_to_origin_files = [os.path.join(base_dir, rel) for rel in rel_path_to_origin_files]
+	abs_origin_backup_infos = [{'origin': p, 'backup': MapToBackupName(p)} for p in abs_path_to_origin_files]
+	
+	return abs_origin_backup_infos
+
+def CreateOrRestoreFromBackup(base_dir, relative_path_to_files):
+
+	abs_origin_backup_infos = FetchAbsOriginBackupInfo(base_dir, relative_path_to_files)
+
+	for aobi in abs_origin_backup_infos:
+
+		abs_original = aobi['origin']
+		abs_backup = aobi['backup']
+
+		if os.path.exists(abs_backup):
 			# restore from backup
-			shutil.copyfile(abs_path_backup, abs_path)
+			shutil.copyfile(abs_backup, abs_original)
 		else:
 			# create backup
-			shutil.copyfile(abs_path, abs_path_backup)
+			shutil.copyfile(abs_original, abs_backup)
 
 	return None
+
+def DeleteBackups(base_dir, relative_path_to_files):
+
+	abs_origin_backup_infos = FetchAbsOriginBackupInfo(base_dir, relative_path_to_files)
+
+	for aobi in abs_origin_backup_infos:
+
+		abs_backup = aobi['backup']
+
+		if os.path.exists(abs_backup):
+			os.remove(abs_backup)
+
+	return None
+
+def ResetDirectory(base_dir, relative_path_to_files):
+
+	CreateOrRestoreFromBackup(base_dir, relative_path_to_files)
+	DeleteBackups(base_dir, relative_path_to_files)
+
+	return None
\ No newline at end of file
diff --git a/scripts/settings.py b/scripts/settings.py
index c336e5f..f9207aa 100644
--- a/scripts/settings.py
+++ b/scripts/settings.py
@@ -1,4 +1,4 @@
 mdtool = "/Applications/Xamarin\ Studio.app/Contents/MacOS/mdtool"
 sln_path = "/Users/rzaitov/Documents/Apps/BuildScript/BuildSample/BuildSample.sln"
-
+files_for_backup = ["BuildSample.sln", "BuildSample/CoolApp.csproj"]
 projects_to_exclude = ["NotCompileApp"]
\ No newline at end of file