Hi. I have tried to implement a variable length form. Yes, I have read http://www.zope.org/Members/jpenny/variable_length_forms/index_html.! I a form, I'm using following form fields: <dtml-in "_.range(1, _.string.atoi(form_numpages)+1, 1)"> <tr align="center" valign="middle"> <td><dtml-var sequence-number></td> <td><input type="text" name="form_time_out" size="6" maxlength="4"></td> <td><input type="radio" name="radiob<dtml-var sequence-number>"></td> <td><input type="radio" name="radiob<dtml-var sequence-number>"></td> </tr> </dtml-in> where form_numpages is a variable that i got from a previous form. This form works fine and generates me form_numpages lines with always one textfield and a group of 2 radiobuttons named per line. form_time_out radiob1 radiob1 form_time_out radiob2 radiob2 form_time_out radiob3 radiob3 ... The contents of this form is submitted and I want to interpret the data with following method: 1: <dtml-in "_.range(1, _.string.atoi(form_numpages)+1, 1)"> 2: <dtml-var sequence-number>: 3: <dtml-var "_['radiob'+_['sequence-number']]"> 4: </dtml-in> This returns the following Zope error: Error Type: TypeError Error Value: illegal argument type for built-in operation If I'm replacing the third line with <dtml-var "_['sequence-number']">, the sequence-number is printed out. So I'm sure that it exits. How can I get the contents of radiob1, radiob2, radiob3, ... Thanks a lot for your help! Marc Ludwig