Email synax: messeage depending on the value of a group value

[cgn]

Sending emails with my W4K is working. Once a day, I'd like to send an email. The message should depend on the vealue of the group values. This message should be list, of all values, which are below a certain limit - in this case 85. I tried the following code - synax error. Any idea? 

Code:

for i = 0, 30, 1 do
  SP = grp.getvalue('35/1/' ..i)
  if (SP < 85) then
    message = 'Alert: ' '35/1/' ..i '<br>'

end
end