flash chart bar_stack

User: "Marco_Barradas"
Altair Employee
Updated by Jocelyn
Hi I'm designing a dashboard and I'm having some trouble with the bar stack option of flash chart on RapidMiner Server.
I select my process and on the x-axis I can only select One column of the output dataset and I don't find an option to select which column I should select to stack in the chart. Does anybody has the same problem?