Tabsoft, thanks for the reply.

Would that explain the following:

When using HSEROUT the line
Code:
Hserout ["TT",#CounterA Dig 1,#CounterA Dig 0,0]
Compiles without errors... but
Code:
serout portb.0,T9600,[DEC1 Pid_channel+1,0] 'or the following
serout2 portb.0,T9600,["TT",DEC1 Pid_channel+1,0]
Fails......

If what you are saying about the modifiers, why will they work with the hardware command, but not with the serial command ??