Leo Messi challenges his fans on Facebook
After the FC Barcelona - Sevilla game the Argentine posted on social media
He made reference to his celebration after making it 2-0 to Barça at Camp Nou
Lionel Messi celebrated the first of his two goals against Sevilla with by gesturing two fingers across his cheek.
It was a sign which is used for the campaign '#ParaLosValientes' which is a bid to help children fighting against cancer.
The final objective of the campaign is to raise the necessary money to build the biggest hospital in Europe in Barcelona for children fighting the disease.
They need 30 million euros and according to the most recent reports have so far raised four million.
After the Sevilla game, Messi wrote on Facebook:
"I challenge you all to paint your faces #ParaLosValientes: Because we can all help to make the building of a Paediatric Cancer Centre a reality, so that many more children around the world can receive treatment using the latest medical advances. www.paralosvalientes.com."
