TabStrip - set a Tab dynamically in an Action

Hi Experts,

I'm building an application for flat file Uploads into alv. The view contains one TabStrip with two Tabs, one with the Content of flat file in an ALV grid, the other tab with Messages. Depending on Content of flat file, I like to show tab with messages (in case of errors), or tab with flat file Content (successful load).

Has anyone an idea regarding coding?

Best regards, Thomas