Using R we created a reactive dataset, which connects the original dataset and controllers. Since the graphic part of vis.js works only with dd-mm-yyyy format, we added and external CSS file to stylize uncertain entities, which set the uncertainty as semi-transparent elements. For setting the controllers, firstly, in R we wrapped them as a reactive function. In a basic way, this solution uses shiny for calling reactive and dynamic functions inside a server part. Secondly, these functions are visualized in vis.js.