def METHOD_NAME(self):
    for property in self.modifiedDict:
        tuple = self.modifiedDict[property]
        widget = tuple[0]
        entry = tuple[1]
        type = tuple[2]
        fNone = tuple[3]
        value = entry.get()
        lValue = value.lower()
        if 'none'.find(lValue) != -1:
            if fNone and (lValue == 'none'):
                widget[property] = None
        else:
            if type == 'real':
                value = float(value)
            elif type == 'integer':
                value = int(value)
            widget[property] = value