Saving specific response

Hi,

I did set up my study, it works exacly how I want, however, I struggle with saving my data. I know how to save status or response time but here I am intrested in specific button that has been pressed as response to specific picture. In other words I need to know which button has been pressed to which picture.

Here is a code (the experiment is embodied in the survey):

bitmaps
    a1shore s01a_matched.jpg
    a1stadium s02a_matched.jpg
    a1grassland s03a_matched.jpg
    a1mountain s04a_matched.jpg
    a1road s05a_matched.jpg
    a1casino s06a_matched.jpg
    a1pub s07a_matched.jpg
    a1restaurant s08a_matched.jpg

table mytable
    a1shore "swimming"
    a1stadium "winning"
    a1grassland "mowing"
    a1mountain "hiking"
    a1road "driving"
    a1casino "gambling"
    a1pub "drinking"
    a1restaurant "dining"


fonts
    arial 30

task my_task
    table mytable
    keys 1 2 3 4 5 6
    show bitmap @1
    delay 1000
    show text @2
    readkey 1 1000000
    clear 1 2


block test
    tasklist
         my_task 8 all_before_repeat
    end

Any idea how to approach this?