Searches the text for a particular substring, returning the positional index of the first byte of the first match.
search( search_text, within_text, start_num )
search_text: (Text) The text that will be searched for.
within_text: (Text) The text within which the search text will be searched for.
start_num: (Number) The positional index in bytes of the first byte of the substring to be returned.
The first byte of the entire text value is considered to have an index = 1.
The search_text parameter only supports
? as a wildcard character.