SubString (NoOfChars)
Example
In this example, we are passing the required parameters to the function transformation object using a Variables object.
Where,
str: ABCDEFGHI
startAt = 2
noOfChars = 4
Right-click on the function transformation object and select Preview Output. You can see that Astera Data Stack has returned a part of the string, starting at position startAt, and of length, noOfChars.