diff --git a/NEWS.md b/NEWS.md
index 9d3a26d..c4704ec 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -3,10 +3,6 @@
 ## Planned Changes
 
 * Add folder generation function
-* Remove warnings:
-
-1: `as_data_frame()` is deprecated as of tibble 2.0.0. Please use `as_tibble()` instead.
-2: `data_frame()` is deprecated as of tibble 1.1.0. Please use `tibble()` instead.
 
 # lazytrade 0.4.1
 
@@ -19,9 +15,10 @@
 * added option to balance classes in mt_make_model function
 * add and delete depricated functions
 * change names of functions to reflect the purpose: mt - market type, rl- reinforcement learning, util - utility
+* change example methods to unify them across functions
+* align names of the variables across several functions
 * remove warnings caused by new dplyr functionalities .groups
-
-
+* remove tidyr from imports to solve Note
 
 # lazytrade 0.4.0
 
diff --git a/R/aml_make_model.R b/R/aml_make_model.R
index e3675cf..08342a5 100644
--- a/R/aml_make_model.R
+++ b/R/aml_make_model.R
@@ -53,8 +53,8 @@
 #'
 #' # dataset will be written to the temp directory
 #'
-#' # start h2o engine (using all CPU's by default)
-#' h2o.init()
+#' # start h2o engine
+#' h2o.init(nthreads = 2)
 #'
 #'
 #' # performing Deep Learning Regression using the custom function
diff --git a/R/aml_score_data.R b/R/aml_score_data.R
index 8860355..d027da9 100644
--- a/R/aml_score_data.R
+++ b/R/aml_score_data.R
@@ -48,7 +48,7 @@
 #'                  path_data = path_data)
 #' # start h2o engine (using all CPU's by default)
 #'
-#' h2o.init()
+#' h2o.init(nthreads = 2)
 #'
 #'
 #' # performing Deep Learning Regression using the custom function
diff --git a/R/aml_test_model.R b/R/aml_test_model.R
index 63e8bb9..8e3de6b 100644
--- a/R/aml_test_model.R
+++ b/R/aml_test_model.R
@@ -54,8 +54,8 @@
 #'                  path_data = path_data)
 #'
 #'
-#' # start h2o engine (using all CPU's by default)
-#' h2o.init()
+#' # start h2o engine
+#' h2o.init(nthreads = 2)
 #'
 #'
 #' # performing Deep Learning Regression using the custom function
diff --git a/R/mt_make_model.R b/R/mt_make_model.R
index be83d01..775581a 100644
--- a/R/mt_make_model.R
+++ b/R/mt_make_model.R
@@ -46,8 +46,8 @@
 #'
 #' Sys.sleep(5)
 #'
-#' # start h2o engine (using all CPU's by default)
-#' h2o.init()
+#' # start h2o engine
+#' h2o.init(nthreads = 2)
 #'
 #'
 #' # performing Deep Learning Regression using the custom function
diff --git a/R/self_learn_ai_R.R b/R/self_learn_ai_R.R
index 3c2a4e5..897a2a1 100644
--- a/R/self_learn_ai_R.R
+++ b/R/self_learn_ai_R.R
@@ -35,8 +35,8 @@
 #' library(magrittr)
 #' library(h2o)
 #' library(lazytrade)
-#' # start h2o engine (using all CPU's by default)
-#' h2o.init()
+#' # start h2o engine
+#' h2o.init(nthreads = 2)
 #'
 #' path_model <- normalizePath(tempdir(),winslash = "/")
 #' path_data <- normalizePath(tempdir(),winslash = "/")
diff --git a/man/aml_make_model.Rd b/man/aml_make_model.Rd
index 2c4fffb..2b8ec7d 100644
--- a/man/aml_make_model.Rd
+++ b/man/aml_make_model.Rd
@@ -64,8 +64,8 @@ aml_collect_data(indicator_dataset = ind,
 
 # dataset will be written to the temp directory
 
-# start h2o engine (using all CPU's by default)
-h2o.init()
+# start h2o engine
+h2o.init(nthreads = 2)
 
 
 # performing Deep Learning Regression using the custom function
diff --git a/man/aml_score_data.Rd b/man/aml_score_data.Rd
index b5ded90..8b0e40b 100644
--- a/man/aml_score_data.Rd
+++ b/man/aml_score_data.Rd
@@ -59,7 +59,7 @@ aml_collect_data(indicator_dataset = ind,
                  path_data = path_data)
 # start h2o engine (using all CPU's by default)
 
-h2o.init()
+h2o.init(nthreads = 2)
 
 
 # performing Deep Learning Regression using the custom function
diff --git a/man/aml_test_model.Rd b/man/aml_test_model.Rd
index b32ce77..fa40956 100644
--- a/man/aml_test_model.Rd
+++ b/man/aml_test_model.Rd
@@ -75,8 +75,8 @@ aml_collect_data(indicator_dataset = ind,
                  path_data = path_data)
 
 
-# start h2o engine (using all CPU's by default)
-h2o.init()
+# start h2o engine
+h2o.init(nthreads = 2)
 
 
 # performing Deep Learning Regression using the custom function
diff --git a/man/mt_make_model.Rd b/man/mt_make_model.Rd
index a4f823d..63d58ab 100644
--- a/man/mt_make_model.Rd
+++ b/man/mt_make_model.Rd
@@ -64,8 +64,8 @@ data(macd_ML60M)
 
 Sys.sleep(5)
 
-# start h2o engine (using all CPU's by default)
-h2o.init()
+# start h2o engine
+h2o.init(nthreads = 2)
 
 
 # performing Deep Learning Regression using the custom function
diff --git a/man/self_learn_ai_R.Rd b/man/self_learn_ai_R.Rd
index cc270e1..36c3eb1 100644
--- a/man/self_learn_ai_R.Rd
+++ b/man/self_learn_ai_R.Rd
@@ -58,8 +58,8 @@ library(readr)
 library(magrittr)
 library(h2o)
 library(lazytrade)
-# start h2o engine (using all CPU's by default)
-h2o.init()
+# start h2o engine
+h2o.init(nthreads = 2)
 
 path_model <- normalizePath(tempdir(),winslash = "/")
 path_data <- normalizePath(tempdir(),winslash = "/")