diff --git a/tryton/gui/window/view_form/model/field.py b/tryton/gui/window/view_form/model/field.py
index 19846c91a4..d4ee8ac8e4 100644
--- a/tryton/gui/window/view_form/model/field.py
+++ b/tryton/gui/window/view_form/model/field.py
@@ -171,8 +171,12 @@ class FloatField(CharField):
     def set_client(self, model, value, test_state=True, force_change=False):
         internal = model.value[self.name]
         self.set(model, value, test_state)
+        if isinstance(self.attrs.get('digits'), str):
+            digits = model.expr_eval(self.attrs['digits'])
+        else:
+            digits = self.attrs.get('digits', (12, 2))
         if abs(float(internal or 0.0) - float(model.value[self.name] or 0.0)) \
-                >= (10.0**(-int(self.attrs.get('digits', (12,4))[1]))):
+                >= (10.0**(-int(digits[1]))):
             if not self.get_state_attrs(model).get('readonly', False):
                 model.modified = True
                 model.modified_fields.setdefault(self.name)
diff --git a/tryton/gui/window/view_form/view/form_gtk/float.py b/tryton/gui/window/view_form/view/form_gtk/float.py
index 2e3d870397..adf21ab0b0 100644
--- a/tryton/gui/window/view_form/view/form_gtk/float.py
+++ b/tryton/gui/window/view_form/view/form_gtk/float.py
@@ -23,7 +23,11 @@ class Float(Integer):
         if not model_field:
             self.entry.set_text('')
             return False
-        self.entry.set_text(locale.format('%.' + str(self.digits[1]) + 'f',
+        if isinstance(self.digits, str):
+            digits = self._view.model.expr_eval(self.digits)
+        else:
+            digits = self.digits
+        self.entry.set_text(locale.format('%.' + str(digits[1]) + 'f',
             model_field.get(model) or 0.0, True))
 
     def sig_insert_text(self, entry, new_text, new_text_length, position):
diff --git a/tryton/gui/window/view_form/view/list.py b/tryton/gui/window/view_form/view/list.py
index c95842d380..9babfc2e94 100644
--- a/tryton/gui/window/view_form/view/list.py
+++ b/tryton/gui/window/view_form/view/list.py
@@ -441,6 +441,7 @@ class ViewList(ParserView):
             #self.widget.set_cursor(None,None,False)
             if self.store:
                 self.widget_tree.set_model(self.store)
+        self.widget_tree.queue_draw()
         self.set_state()
         self.update_children()
 
diff --git a/tryton/gui/window/view_form/view/list_gtk/parser.py b/tryton/gui/window/view_form/view/list_gtk/parser.py
index a43e24576e..c57e046c94 100644
--- a/tryton/gui/window/view_form/view/list_gtk/parser.py
+++ b/tryton/gui/window/view_form/view/list_gtk/parser.py
@@ -171,8 +171,12 @@ class ParserTree(ParserInterface):
                         label.set_markup(label_str)
                     label_sum = gtk.Label()
                     label_sum.set_use_markup(True)
-                    dict_widget[i] = (fname, label, label_sum,
-                            fields.get('digits', (16,2))[1], label_bold)
+                    if isinstance(fields.get('digits'), str):
+                        digits = 2
+                    else:
+                        digits = fields.get('digits', (16, 2))[1]
+                    dict_widget[i] = (fname, label, label_sum, digits,
+                            label_bold)
         if not bool(int(attrs.get('fill', '0'))):
             col = gtk.TreeViewColumn()
             col.name = None
@@ -347,7 +351,10 @@ class Datetime(Date):
 
 class Float(Char):
     def get_textual_value(self, model):
-        digit = self.attrs.get('digits', (16, 2))[1]
+        if isinstance(self.attrs.get('digits'), str):
+            digit = model.expr_eval(self.attrs['digits'])[1]
+        else:
+            digit = self.attrs.get('digits', (16, 2))[1]
         return locale.format('%.'+str(digit)+'f',
                 model[self.field_name].get_client(model) or 0.0, True)
 
diff --git a/tryton/gui/window/view_form/widget_search/float.py b/tryton/gui/window/view_form/widget_search/float.py
index d210ff64a8..d8ab04bae9 100644
--- a/tryton/gui/window/view_form/widget_search/float.py
+++ b/tryton/gui/window/view_form/widget_search/float.py
@@ -10,7 +10,10 @@ class Float(Integer):
 
     def __init__(self, name, parent, attrs=None):
         super(Float, self).__init__(name, parent, attrs=attrs)
-        self.digits = attrs.get('digits', (14, 2))
+        if isinstance(attrs.get('digits'), str):
+            self.digits = (14, 2)
+        else:
+            self.digits = attrs.get('digits', (14, 2))
 
     def _value_get(self):
         try:
diff --git a/tryton/gui/window/view_tree/view_tree.py b/tryton/gui/window/view_tree/view_tree.py
index bd4651bec0..3e4ba690db 100644
--- a/tryton/gui/window/view_tree/view_tree.py
+++ b/tryton/gui/window/view_tree/view_tree.py
@@ -134,9 +134,11 @@ class ViewTreeModel(gtk.GenericTreeModel, gtk.TreeSortable):
                                     selection = []
                         self.fields_type[field]['selection'] = selection
             elif field_type in ('float', 'numeric'):
-                digit = self.fields_type[field].get('digits', (16, 2))[1]
+                digits = self.fields_type[field].get('digits', (16, 2))
+                if isinstance(digits, str):
+                    digits = eval(digits, obj)
                 for obj in res_ids:
-                    obj[field] = locale.format('%.' + str(digit) + 'f',
+                    obj[field] = locale.format('%.' + str(digits[1]) + 'f',
                             obj[field] or 0.0, True)
             elif field_type in ('interger',):
                 for obj in res_ids: