Incorporate constant into byte array as ASCII correct code

Question

I have some numeric constants in my data definition and would like to be able to use them inside my strings without having to embed them at runtime. Is this possible in MASM?

.data

LOWER_BOUND = 50
UPPER_BOUND = 100

promptMessage  BYTE  "Please enter a number between ", LOWER_BOUND, " and ", UPPER_BOUND, ".",10,13,0

I am using the Irvine library.