Marek S. wrote: > def __init__(self): ... > self.c=f.readline() > c1=int(self.c) > self.FieldList=[] > self.FieldList.append(c1) here you add an integer to the list. > def Pola(self,k,icol,irow,DefaultValue): > self.Tab=StringVar() ... > self.FieldList.append(self.Tab) and here you add a StringVar. </F>