ENABLE_HANA_MDX different formula syntax?

Hi,

we have recently activated ENABLE_HANA_MDX support and now we have difficulties with creating formulas

A simple formula like:

[ACCOUNT].[NODE_999]

is not an issue but if we add a 2nd selection like

([ACCOUNT].[NODE_999],[FUNC_AREA].[A])

we do get "Internal error: no result set" during activation.

The same formula worked without ENABLE_HANA_MDX

Thx!