How to add a column with computed columns with values of row on Sybase IQ [closed]

Question

How to add a computed column to a table referring a field from current row at Sybase IQ 16

Here is want I want to achieve: When inserting a new row (or updating a row) I want to have a column updated based on a function referencing another field. To make an example

I've got this table:

CREATE TABLE "myTable" (
    id integer,
    sales integer,
    bonus integer
)

Where bonus should be calculated as sales * 10 -- remember, just an example.

I was thinking about adding some trigger functions doing this, but then I found computed columns -- unfortunately wasn't able to get this running.