hex numbers in asm blocks

[LTee]

Sorry to be creating so many posts the last couple of days.

Should this work?

Code:

asm
defb ffh
end asm

I read a post elsewhere which suggested that that was the correct syntax to use for hex numbers in an asm block, but I get this:

Code:

test.bas:1: Error: Undefined label 'ffh'

If I switch the 'ffh' for a '255' then all is fine. 1.4.0-s1885, as before. Thanks!