Returns the (last) index position of a value in the list
Searches for the given value in the list and, if found, returns the index position of it. Returns -1 if it is not found.
If the value is contained in the list more than one time it returns the last occasion.
Like list.contains() this method is case sensitive on strings.
Value whose position is searched in the list
|Return value||Last index position of the value in the list, -1 if it is not contained (Number)|
|Allowed in script types||