How to validate Dimenstions

Hi All,

in the new AX 2012, dimension is totally changed. 

my question is, if I use X++ code to generate ledgerTransLine, and user specify dimension set (using from 2012), like center = 90, department =90, purpose =10, ledger account num = 10000

now how can I check this ledger dimension set is valid in 2012? if valid, how can I get LedgerDimension recid?

Regards,

Srinivas