On 19 February 2015 at 13:28, <[email protected]> wrote:

> After some further reseach I found out that the used types do not matter.
> My work-a-round now is to put the properties on the parent-object and hide
> them except on the subclasses intended.
>
>
> glad you have a workaround, at least?


>
> Are there any known limits that I miss?
>
> Or can columns only be added to empty tables or ...?
>
>
Not sure I understand your question... can you rephrase/expand?

thx
Dan

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