Trim first and last two characters

[madman411]

Trying to trim characters from both the left and right of a value in one field. There are no breaks or symbols within the value.

For example, the following value is in my "full_ticket_number" field:

2900686073681910

In a separate calc field I need to have the "29" from the left and the "0" from the right removed to provide the value:

0068607368191

In this example, the "29" and the "0" seem to be some sort of control character placed there by the issuer, which have no use for me in my solution.

Of course the value is unique for each record so I can't just have the calculation look for certain characters to apply the function to. I've tried to combine both the Left and Right functions, but FM is providing errors I can't seem to solve.

Advice much appreciated!

[comment]

3 minutes ago, madman411 said:

I've tried to combine both the Left and Right functions

Try the Middle() function:

Middle ( full_ticket_number ; 3 ; Length ( full_ticket_number ) - 3 )

If all ticket numbers have the same length, you can shorten it to:

Middle ( full_ticket_number ; 3 ; 13 )

 

[madman411]

Thanks, Comment. This worked a charm.