Ben Affleck confirmed this year that he would star in and direct Warner Bros.’ stand-alone Batman movie, but the actor recently admitted that wasn’t set in stone.

Affleck sat down with The Guardian to discuss his career and latest movie, Live by Night. During the interview, he was asked about Batman v Superman: Dawn of Justice and The Batman. Although Affleck confirmed he was on board during a panel at CinemaCon, he told The Guardian there were a few stipulations that could prevent him from going through with it.

“But it’s not a set thing and there’s no script,” Affleck answered when asked about the movie. “If it doesn’t come together in a way I think is really great I’m not going to do it.”

After Batman v Superman was released — and torn apart by the majority of critics — Affleck has been left to defend the film he made. In an interview with Fox 5 DC in October, Affleck finally addressed the criticism head-on instead of dodging the question.

“It was interesting, that movie, because it was judged not necessarily on execution so much as on its tone,” Affleck said. “People seemed to want to have a lighter tone to the movie, and I thought that was interesting because it's subjective. Tone is not a qualitative thing. It's subjective, right? Some tones resonate with me that might not with you.”

Affleck added that he personally loved it, but after scorching reviews and a seemingly neverending line of questioning about the poor reception, it seems like he’s being more cautious this time. Although Affleck will direct the movie and play Batman, giving him more control than most, it all depends on whether or not the script lives up to his standards. Affleck will reportedly co-write the script with Geoff Johns, one of DC’s more notable Batman writers and the head of DC Films.

Details surrounding the movie are still light, including when it’ll be released, but The Batman will be a part of DC’s Extended Cinematic Universe.

Ben Affleck has some concerns that may keep him from doing The Batman movie