change alignment in matrix

[R.G.N. Meegama]

I've created a matrix with centred vertical alignment and entered the
values into the cells. Now, I need to change the alignment to the right.
Do I need to start all over again or is there a way to change the vertical
alignment of the cells without having to key-in the values again ?

I'm running lyx1.1.6.fix1 in Sun OS 5.6.

Thank you

Gayan