If you want to make strategy trading on some symbol and at the same time load VIX as a data series - it's not possible in FSB, since it loads only one symbol.
This will be possible in FSB Pro.

The only possibilities is to integrate VIX as a static data in a indicator and to use it for backtesting.

Do you have an idea when a beta version would be available?

The only possibilities is to integrate VIX as a static data in a indicator and to use it for backtesting.

Popov wrote:

You can.
Read more about Exporting a Strategy as an Indicator.
This feature generates a static indicator with predefined values. You can use similar format to present your values. This static format is useful only for backtesting.

So you're saying that I should add a new instrument (VIX for example) and then export is as a custom strategy right?  But that way I would not be able to optimize the VIX values right?

Humm I think it's not possible. According to the documentation, "The exported strategy becomes a static filter, meaning that the signals cannot change after we save it." Please correct me if I'm wrong.

You can.
Read more about Exporting a Strategy as an Indicator.
This feature generates a static indicator with predefined values. You can use similar format to present your values. This static format is useful only for backtesting.

So you're saying that I should add a new instrument (VIX for example) and then export is as a custom strategy right?  But that way I would not be able to optimize the VIX values right?