Millisecond Forums

I am a new user. I am trying to identify a task from the library that would include the presentation of blocks of pictures. Upon each picture the participant is requested to provide a response if he/she thinks that the picture is paired with positive feedback or with no feedback. Each block of trials will randomly present pictures of three categories depending on how likely the participant is of getting positive feedback: 100% feedback, 50% feedback, and 0% feedback. Are there any existing task in the library that resembles this protocol?