How can one use character alignment in math mode? (I am using the last stable ConTeXt version — 2014.05.21.)

\starttext

\setupTABLE[column][first][alignmentcharacter={,}, aligncharacter=yes, align=middle]

Figures in text mode get aligned:

\startTABLE

    \NC 0,0     \NC \NR

    \NC 0,00    \NC \NR

    \NC 0,000   \NC \NR

\stopTABLE

But figures in math mode do not get aligned:

\startTABLE

    \NC $0,0$   \NC \NR

    \NC $0,00$  \NC \NR

    \NC $0,000$ \NC \NR

\stopTABLE

\stoptext

Best regards.