Substring(startValue, length)

Retrieves a substring. The substring begins at a specified
character position and has a specified length. (Start value begins with 0).
Result: New text
Example:

{[BIPINSTANCE:Type].substring(4,2)}
Returns WT (type name: 173_WT_A_BEWA_0200_C2530)

In conjunction with the Length function, a string with a specific
number of characters from the first character to the right of a string can also be returned.

For example the last 5 characters of a character string:

{[BIPINSTANCE:Type].Substring([BIPINSTANCE:Type].Length-5)}
Returns C2530 (type name: 173_WT_A_BEWA_0200_C2530)