IMacros random choose ( noob )

It seems that this site does not let me to put this question no matter what . i really need your help guys . thank you

Hello , i have a probably quite easy question . I must choose randomly each time i run the script one between this . This would be my first project in this program (if i can tell it a "project" ) I appreciate any help .

TAG POS=1 TYPE=IMG ATTR=SRC:photolink1
TAG POS=1 TYPE=IMG ATTR=SRC:photolink2
TAG POS=1 TYPE=IMG ATTR=SRC:photolink3

Can i get some help please ? thank you very much .