Hi, is this supposed to work? It doesn't and instead gives the bogus error message about the keyword "to": <hansl> function void check(list L)     loop foreach i L         ols L.$i const L.$i(-1 to -2)    # symbol 'to' not defined     endloop end function open denmark check(deflist(LRM,LRY)) </hansl> The whole thing works when I work with a copy to a temp series instead, like this: series temp = L.$i ols temp const temp(-1 to -2) thanks sven