i have this event where you give an item

so I have this little chicken thing and I want it to where when you give it monster food it grows 

text:heres what I have on part of the event:

text:Give him monster food?
show choices
when yes;
Change Items [monster food] -1
text: NOM NOM NOM NOM NOM

I didnt write it EXACTLY how it looks and thats only a small part of the evnt but my problem is that no matter what if you choose yes, it goes on. It you don't have any monster food it ignores Change Items [monster food] -1



What I want it to do is if you don't have monster food then it says "you needs monster food" or something

plz help!

after "If yes", you have to place a conditional branch checking if you have any monster food. If you don't, then the event won't occur. You can write something like "You don't have any food to give. go get some blah blah blah". If you do have monster food then the event will continue. The conditional branch goes before the -1 food.

thank you!