fixed important bug in the render of the FloatField, wrong values where displayed to the user

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@3285 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/FormulatorPatch.py

@@ -782,7 +782,7 @@ class FloatWidget(TextWidget):
           if precision not in (None,''):
             for i in range(0,precision):
               if i < len(value_list[1]):
-                value += value_list[1][0]
+                value += value_list[1][i]
               else:
                 value += '0'
           else: