diff --git a/NodeGraphQt/custom_widgets/properties_bin/custom_widget_color_picker.py b/NodeGraphQt/custom_widgets/properties_bin/custom_widget_color_picker.py
index 79d0813b..a0004496 100644
--- a/NodeGraphQt/custom_widgets/properties_bin/custom_widget_color_picker.py
+++ b/NodeGraphQt/custom_widgets/properties_bin/custom_widget_color_picker.py
@@ -15,7 +15,11 @@ def __init__(self, parent=None):
         self._color = (0, 0, 0)
         self._button = QtWidgets.QPushButton()
         self._vector = PropVector3()
+        self._vector.set_steps([1, 10, 100])
+        self._vector.set_data_type(int)
         self._vector.set_value([0, 0, 0])
+        self._vector.set_min(0)
+        self._vector.set_max(255)
         self._update_color()
 
         self._button.clicked.connect(self._on_select_color)
@@ -53,6 +57,15 @@ def _update_color(self):
             'rgb: {}\nhex: {}'.format(self._color[:3], hex_color)
         )
 
+    def set_data_type(self, data_type):
+        """
+        Sets the input line edit fields to either display in float or int.
+
+        Args:
+            data_type(int or float): int or float data type object.
+        """
+        self._vector.set_data_type(data_type)
+
     def get_value(self):
         return self._color[:3]
 
@@ -74,7 +87,11 @@ def __init__(self, parent=None):
         self._color = (0, 0, 0, 255)
         self._button = QtWidgets.QPushButton()
         self._vector = PropVector4()
+        self._vector.set_steps([1, 10, 100])
+        self._vector.set_data_type(int)
         self._vector.set_value([0, 0, 0, 255])
+        self._vector.set_min(0)
+        self._vector.set_max(255)
         self._update_color()
 
         self._button.clicked.connect(self._on_select_color)
diff --git a/NodeGraphQt/custom_widgets/properties_bin/custom_widget_value_edit.py b/NodeGraphQt/custom_widgets/properties_bin/custom_widget_value_edit.py
index b2ba0f67..5bc49b2f 100644
--- a/NodeGraphQt/custom_widgets/properties_bin/custom_widget_value_edit.py
+++ b/NodeGraphQt/custom_widgets/properties_bin/custom_widget_value_edit.py
@@ -1,6 +1,10 @@
 #!/usr/bin/python
+import re
+
 from Qt import QtWidgets, QtCore, QtGui
 
+_NUMB_REGEX = re.compile(r'^((?:\-)*\d+)*([\.,])*(\d+(?:[eE](?:[\-\+])*\d+)*)*')
+
 
 class _NumberValueMenu(QtWidgets.QMenu):
 
@@ -83,16 +87,17 @@ def __init__(self, parent=None, data_type=float):
         self._previous_x = None
         self._previous_value = None
         self._step = 1
-        self._speed = 0.1
+        self._speed = 0.05
         self._data_type = float
+        self._min = None
+        self._max = None
 
         self._menu = _NumberValueMenu()
         self._menu.mouseMove.connect(self.mouseMoveEvent)
         self._menu.mouseRelease.connect(self.mouseReleaseEvent)
         self._menu.stepChange.connect(self._reset_previous_x)
-        self._menu.set_steps([0.001, 0.01, 0.1, 1, 10, 100, 1000])
 
-        self.editingFinished.connect(self._on_text_changed)
+        self.editingFinished.connect(self._on_editing_finished)
 
         self.set_data_type(data_type)
 
@@ -113,7 +118,7 @@ def mouseMoveEvent(self, event):
                 value = self._previous_value
                 value = value + int(delta * self._speed) * self._step
                 self.set_value(value)
-                self._on_text_changed()
+                self._on_mmb_mouse_move()
         super(_NumberValueEdit, self).mouseMoveEvent(event)
 
     def mousePressEvent(self, event):
@@ -140,15 +145,37 @@ def keyPressEvent(self, event):
     def _reset_previous_x(self):
         self._previous_x = None
 
-    def _on_text_changed(self):
+    def _on_mmb_mouse_move(self):
+        self.value_changed.emit(self.get_value())
+
+    def _on_editing_finished(self):
+        if self._data_type is float:
+            match = _NUMB_REGEX.match(self.text())
+            if match:
+                val1, point, val2 = match.groups()
+                if point:
+                    val1 = val1 or '0'
+                    val2 = val2 or '0'
+                    self.setText(val1 + point + val2)
         self.value_changed.emit(self.get_value())
 
     def _convert_text(self, text):
-        # int("1.0") will return error
-        # so we use int(float("1.0"))
-        try:
-            value = float(text)
-        except:
+        """
+        Convert text to int or float.
+
+        Args:
+            text (str): input text.
+
+        Returns:
+            int or float: converted value.
+        """
+        match = _NUMB_REGEX.match(text)
+        if match:
+            val1, _, val2 = match.groups()
+            val1 = val1 or '0'
+            val2 = val2 or '0'
+            value = float(val1 + '.' + val2)
+        else:
             value = 0.0
         if self._data_type is int:
             value = int(value)
@@ -157,26 +184,90 @@ def _convert_text(self, text):
     # public
 
     def set_data_type(self, data_type):
+        """
+        Sets the line edit to either display value in float or int.
+
+        Args:
+            data_type(int or float): int or float data type object.
+        """
         self._data_type = data_type
-        self._menu.set_data_type(data_type)
         if data_type is int:
-            self.setValidator(QtGui.QIntValidator())
+            regexp = QtCore.QRegExp(r'\d+')
+            validator = QtGui.QRegExpValidator(regexp, self)
+            steps = [1, 10, 100, 1000]
         elif data_type is float:
-            self.setValidator(QtGui.QDoubleValidator())
+            regexp = QtCore.QRegExp(r'\d+[\.,]\d+(?:[eE](?:[\-\+]|)\d+)*')
+            validator = QtGui.QRegExpValidator(regexp, self)
+            steps = [0.001, 0.01, 0.1, 1]
+        self.setValidator(validator)
+        if not self._menu.steps:
+            self._menu.set_steps(steps)
+        self._menu.set_data_type(data_type)
 
     def set_steps(self, steps=None):
-        steps = steps or [0.001, 0.01, 0.1, 1, 10, 100, 1000]
+        """
+        Sets the step items in the MMB context menu.
+
+        Args:
+            steps (list[int] or list[float]): list of ints or floats.
+        """
+        step_types = {
+            int: [1, 10, 100, 1000],
+            float: [0.001, 0.01, 0.1, 1]
+        }
+        steps = steps or step_types.get(self._data_type)
         self._menu.set_steps(steps)
 
+    def set_min(self, value=None):
+        """
+        Set the minimum range for the input field.
+
+        Args:
+            value (int or float): minimum range value.
+        """
+        if self._data_type is int:
+            self._min = int(value)
+        elif self._data_type is float:
+            self._min = float(value)
+        else:
+            self._min = value
+
+    def set_max(self, value=None):
+        """
+        Set the maximum range for the input field.
+
+        Args:
+            value (int or float): maximum range value.
+        """
+        if self._data_type is int:
+            self._max = int(value)
+        elif self._data_type is float:
+            self._max = float(value)
+        else:
+            self._max = value
+
     def get_value(self):
-        if self.text().startswith('.'):
-            text = '0' + self.text()
-            self.setText(text)
-        return self._convert_text(self.text())
+        value = self._convert_text(self.text())
+        return value
 
     def set_value(self, value):
-        if value != self.get_value():
-            self.setText(str(self._convert_text(value)))
+        text = str(value)
+        converted = self._convert_text(text)
+        current = self.get_value()
+        if converted == current:
+            return
+        point = None
+        if isinstance(converted, float):
+            point = _NUMB_REGEX.match(str(value)).groups(2)
+        if self._min is not None and converted < self._min:
+            text = str(self._min)
+            if point and point not in text:
+                text = str(self._min).replace('.', point)
+        if self._max is not None and converted > self._max:
+            text = str(self._max)
+            if point and point not in text:
+                text = text.replace('.', point)
+        self.setText(text)
 
 
 class IntValueEdit(_NumberValueEdit):
diff --git a/NodeGraphQt/custom_widgets/properties_bin/custom_widget_vectors.py b/NodeGraphQt/custom_widgets/properties_bin/custom_widget_vectors.py
index a6bb8f52..b13f23d0 100644
--- a/NodeGraphQt/custom_widgets/properties_bin/custom_widget_vectors.py
+++ b/NodeGraphQt/custom_widgets/properties_bin/custom_widget_vectors.py
@@ -51,9 +51,45 @@ def _update_items(self):
                 self._items[index].set_value(value)
 
     def set_data_type(self, data_type):
+        """
+        Sets the input line edit fields to either display in float or int.
+
+        Args:
+            data_type(int or float): int or float data type object.
+        """
         for item in self._items:
             item.set_data_type(data_type)
 
+    def set_steps(self, steps):
+        """
+        Sets the step items in the MMB context menu.
+
+        Args:
+            steps (list[int] or list[float]): list of ints or floats.
+        """
+        for item in self._items:
+            item.set_steps(steps)
+
+    def set_min(self, value):
+        """
+        Set the minimum range for the input fields.
+
+        Args:
+            value (int or float): minimum range value.
+        """
+        for item in self._items:
+            item.set_min(value)
+
+    def set_max(self, value):
+        """
+        Set the maximum range for the input fields.
+
+        Args:
+            value (int or float): maximum range value.
+        """
+        for item in self._items:
+            item.set_max(value)
+
     def get_value(self):
         return self._value
 
diff --git a/NodeGraphQt/nodes/base_node.py b/NodeGraphQt/nodes/base_node.py
index 1d1650ff..4b689d85 100644
--- a/NodeGraphQt/nodes/base_node.py
+++ b/NodeGraphQt/nodes/base_node.py
@@ -697,9 +697,9 @@ def connected_output_nodes(self):
 
     def add_accept_port_type(self, port, port_type_data):
         """
-        Add a accept constrain to a specified node port.
+        Add an accept constrain to a specified node port.
 
-        Once a constrain has been added only ports of that type specified will
+        Once a constraint has been added only ports of that type specified will
         be allowed a pipe connection.
 
         port type data example
@@ -759,7 +759,7 @@ def add_reject_port_type(self, port, port_type_data):
         """
         Add a reject constrain to a specified node port.
 
-        Once a constrain has been added only ports of that type specified will
+        Once a constraint has been added only ports of that type specified will
         NOT be allowed a pipe connection.
 
         port type data example
diff --git a/NodeGraphQt/pkg_info.py b/NodeGraphQt/pkg_info.py
index b6b146d7..c51e203e 100644
--- a/NodeGraphQt/pkg_info.py
+++ b/NodeGraphQt/pkg_info.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
-__version__ = '0.6.21'
+__version__ = '0.6.22'
 __status__ = 'Work in Progress'
 __license__ = 'MIT'