hi,

you just have to create the event with the graphic of the barrel.
then you set the Event start Condition to "push key" and the Position to "same level as hero".

lets make the event commands:
<>Add Item "Herb"
// you have to create the item in the database befor using
// in the event commands

thats it

But its more realistic, if you can get the herb only one time:

<>Add Item "Herb"
<>Change Switch "Herb got" ON set

now create an new page:

here you must set the swich you created in page 1 at the Starting Conditions


I hope you understand my horrible english

If there are any questions, just ask

Greetings
Rash