Forum OpenACS Q&A: Thanks all, let me give you a simple html to show you what I want to get

<form action="formdata.tcl">
  ...
  I will get data from database and use the checkox below to delete it in my formdata.tcl
  <input type="checkbox" name="id" value="id1">
  <input type="checkbox" name="id" value="id2">
  <input type="checkbox" name="id" value="id3">
  <input type="checkbox" name="id" value="id4">
  ...
</form>

suppose I click the checkbox with value id1,id2 and id4
in asp or jsp script, I can get the value of id as:
"id1, id2, id4"
but in formdata.tcl
with that set_the_usual_form_variables proc call,
I get a viable id with value "id4"
I want to get all the id list as:
{id1 id2 id4}
but how can I do?