Script logic that worked in BPC 7.5 is not validating in BPC 10

I have found that TMVL statements will not validate in BPC 10 when used with a variable such as %TIME_SET%. It produces a syntax error. If I hard code a value in place of the variable it will vallidate.

produces syntax error:

*XDIM_MEMBERSET TIMEDIM=TMVL(%TIMEVAR%,%TIME_SET%)

validates:

*XDIM_MEMBERSET TIMEDIM=TMVL(1,P01.2013)

I am experiancing a similar error with *SELECT.

produces Invalid "select" statement error:

*SELECT(%TIMEVAR%,[TIMEVAR],VERSION,"[ID]=%VERSION_SET%")

validates:

*SELECT(%NEWVER%,[NEWVER],VERSION,"[ID]=ACT")

What might be wrong?

Thanks,

--Brent