containsignoreCase, can it be used to fetch records

containsignoreCase, can it be used to fetch records

please can this be clarified for me?

it looks you can't use containsignoreCase function to fetch records


Records=Form[Field.contains("text"); ----> this is ok
Records=Form[Field.containsignoreCase("text")]; ------> Error ( Not able to find 'containsignorecase' function)

Records=Form[contains(Field, "text");  ----> this is ok
Records=Form[containsignoreCase(Field, "text")];  ------> Error ( Not able to find 'containsignorecase' function)


any alternative? I am looking for speed here as there are lots of records to search from

thanks
Luis