Martin, I have it working in BIAB VST. It is tricky but there is a lot more options under the hood in the newer version then in the past. So a lot more clicking to be done.

The trick was to unselect the Transpose button. Then change the key to G and then I could type in any cord I wanted including Db or C#. Or something like that. These were options I was not aware were here in the past, but they seem to do the trick. It helped to read the new posting where the 49 items in the VST are now listed.

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BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6