Thomas Frank has called for the introduction of VAR for this season’s EFL play-offs to avoid “killer” mistakes.
The Brentford boss is preparing his side for the end of the season shoot-out for the final Premier League spot.
The Bees lost 2-1 to Fulham at Wembley in the final last season.
Promotion would be worth over £150million to the West London club.
And Danish coach Frank doesn’t want to risk falling foul of any major decisions due to no VAR.
Frank, 47, said: “In the play-off semi-finals and final there needs to be VAR.
“I said it last year but I don’t know if it was loud enough or if they didn’t listen or they don’t want to or can’t.
“These key incidents in the penalty boxes, I think it is crucial.
“I truly believe in these big moments in these games, there is too much at stake to get the decisions wrong just by human error, which can happen.
“We have had a wrong penalty given this season and if that was the play-off final it would be a killer.
“It is nothing against the referee, they don’t want to take a wrong decision.
“We just need to get it right.”
Fans returned to Wembley on Sunday for the Carabao Cup final in a test event and are due to be allowed back into games later next month in the play-offs.
Frank relishes having some supporters back for their semi-final after nine home draws this term.
Ahead of Rotherham’s visit on Tuesday, Frank added: “I can’t wait.
“It is going to be huge.
“It will help massively.
“With our draws at home, maybe some of the frustration came from they couldn’t be there to help.
“They could may be have pushed us over the line the final bit.
“We are looking forward to playing well and fighting together.”
Frank has promised to field a strong side against the Millers to continue his team’s momentum after nine games unbeaten.
He is still targeting going up despite missing out on automatic promotion.
He added: “I would have gladly taken the automatic but if you can promise me we go to Wembley and win, everybody says that is the best way to get promoted.”