How does Hamelt plan to make sure that the ghost told him the thruth

Hamlet's plan is to create out his father's death to see Claudius' reaction

Hamlet's plan is to create a play acting out his father's death to see Claudius' reaction. Hamlet doesn't want to kill someone based on the word of a ghost. Hamlet also wants to make sure for himself that the ghost was telling the truth. Hamlet is going to write scenes for the actors play to perform in their play.