diff --git a/README.md b/README.md
index 1212bbd..fe36038 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 A library of Charts plotted in Control, 2D and 3D nodes to visualize general purpose datasets.
 
 Author: *"Nicolo (fenix) Santilio"*  
-Version: *0.4.1*  
+Version: *0.4.2*  
 Wiki: *[wip]*  
 Godot Version: *3.2stable*  
 
@@ -72,8 +72,19 @@ You can get this result:
 | Function | Description |
 | ------------- | ------------- |
 |`plot()`|Plot the selected chart with in editor properties|
-|`_plot(source : String, delimiter : String, are_values_columns : bool, x_values : int, invert_xy : bool = false)`|Plot the selected chart with hard coded properties|
+|`plot_from_csv(csv_file : String, _delimiter : String = delimiter)`|Plot the selected chart defining the source and delimiter from code|
+|`plot_from_array(array : Array)`|Plot the selected chart giving an Array of values as a source|
+|`update_plot_data(array : Array)`|Update plot data giving an additional entry to the source|
 |`get_legend()`|Get the legend of the current chart. Returns an **Array** containing control nodes, which can be added as children |
+|*API v2*|*additional functions to define chart's properties from code. Hardcoded properties will overwrite the ones given from editor*|
+|`set_chart_name(ch_name : String)`|Set the displayed name of the chart|
+|`set_source(source_file : String)`|Set the source of the chart to plot|
+|`set_delimiter(delimiter : String)`|Set the delimiter to read data from a CSV file|
+|`set_indexes(lb : int = 0, function_names : int = 0)`|Set the optional indexes of chart's data|
+|`set_radius(use_height : bool = false, f : float = 0)`|Set the radius of the chart, if it is required. If `use_height` is true, the height of the chart will be used.|
+|`set_chart_colors(f_colors : PoolColorArray, o_color : Color, b_color : Color, g_color : Color, h_lines : Color, v_lines : Color)`|Set the colors of the chart| 
+|`set_chart_fonts(normal_font : Font, bold_font : Font, f_color : Color = Color.white)`|Set fonts  and font's color for the chart|
+|`set_source(source_file : String)`|Set the source of the chart to plot|
 
 | Signals | Description |
 | ------------- | ------------- |
@@ -122,11 +133,11 @@ This library offers a set of charts for each main Godot Node:
 - LineChart [Control, 2D, wip 3D]
 - BarChart  [Control, 2D, wipr 3D]
 - ScatterChart [wip Control, wip 2D, 3D]
+- Piechart [Control]
 - RadarChart [Control]
 
 *Work in progress*:
 - Area Chart
-- Pie Chart
 - Donut Chart
 - Radar Chart
 - Bubble Chart
diff --git a/addons/easy_charts/Utilities/Scripts/Chart.gd b/addons/easy_charts/Utilities/Scripts/Chart.gd
index 3af5a09..505ab52 100644
--- a/addons/easy_charts/Utilities/Scripts/Chart.gd
+++ b/addons/easy_charts/Utilities/Scripts/Chart.gd
@@ -86,7 +86,7 @@ var function_names_index : int = 0			setget set_function_names_index#, get_funct
 
 # for radar
 var use_height_as_radius : bool = false		setget set_use_height_as_radius
-var radius : float = 150.0					setget _set_radius
+var radius : float = 150.0					setget _set_radius,get_radius
 
 # for columns
 var column_width : float = 10				setget set_column_width
@@ -457,7 +457,7 @@ func set_radius(use_height : bool = false, f : float = 0):
 	radius = f
 
 # !!! API v2
-func set_chart_colors(f_colors : Array, o_color : Color, b_color : Color, g_color : Color, h_lines : Color, v_lines : Color):
+func set_chart_colors(f_colors : PoolColorArray, o_color : Color, b_color : Color, g_color : Color, h_lines : Color, v_lines : Color):
 	function_colors = f_colors
 	outline_color = o_color
 	box_color = b_color
@@ -499,6 +499,10 @@ func set_use_height_as_radius(b : bool):
 func _set_radius(r : float):
 	radius = r
 
+func get_radius() -> float:
+	if use_height_as_radius: return get_size().y/2
+	else: return radius
+
 # ! API
 func set_column_width(f : float):
 	column_width = f
diff --git a/addons/easy_charts/plugin.cfg b/addons/easy_charts/plugin.cfg
index 71d820b..f79b203 100644
--- a/addons/easy_charts/plugin.cfg
+++ b/addons/easy_charts/plugin.cfg
@@ -3,5 +3,5 @@
 name="EasyCharts"
 description=""
 author="Nicolò \"fenix\" Santilio"
-version="0.4.1"
+version="0.4.2"
 script="plugin.gd"