Thanks for replay!
My actual source code is similar like the followings

set console off
set device to print && default printer is lpt1
set print on

???"I want to print this the printer in lpt1"

do printjob1 && print subroutine

set console on
set device to screen
set print off


set console off
set device to print
set print on

set printer to lpt2

???"I want to print this the printer in lpt2"

do printjob2 && print subroutine.

set console on
set device to screen
set print off

These command working fine in DOS mode.

But VFP6.0 print the two content to lpt1 printer all the time.

Would you help me this?

Please!

David