Find the last occurrence of a string within the specified text. The index where the string occurs is stored in an environment variable called STRRFIND.
STRRFIND "string" [text]
string A string that specifies the string to find. text A sequence of characters.
When the string does not occur within the text then the environment variable STRRFIND will be set to 0.
The first character in the text is at position 1, the second character is at position 2 and so on.