Why do they want Caesar's willl?

The conspirators want Caesar's will to understand his intentions for the Roman people and to use it to manipulate public opinion against Mark Antony and others loyal to Caesar. They believe that revealing the will, which allegedly includes generous bequests to the citizens of Rome, will turn the populace against Antony and solidify their own power. By controlling the narrative surrounding Caesar's legacy, they aim to justify their actions and strengthen their political position.