fix a bug with the data range and the slider
fix a bug with the data range and the slider

rdvincent/brainbrowser,OnWithLife/brainbrowser,juanprietob/brainbrowser,juanprietob/brainbrowser,rdvincent/brainbrowser,OnWithLife/brainbrowser,rdvincent/brainbrowser,OnWithLife/brainbrowser,juanprietob/brainbrowser,juanprietob/brainbrowser