MPL macros in C source

Is it possible?
To use (invoke) a MPL macro in C source.
Something like:

__asm {
.......
%*DEFINE (PackMyData ())
LOCAL end1(
MOV R2,[R4]
JNB R2.3,%end1
BSET T4IC.7
%end1:
MOV R2,[R5]
........
)
}

.....
__asm {
%PackMyData()
}

Peter