Job in the fields

I did a stupid thing today,

I posted a job on my cabagefield.
But something went wrong, so it says that I will pay 0 pounds.

Even i think thats to little.

So does anyone know how to delete or change this?

otherwise, if someone accepts the job, I will sent him 15 pounds.

You can't delete or change... Ask a friend to accept and yes, send him/her 15 pounds (or more )