You should be able to use $strobe.

begin: named_block
 real x;

 x = ....

 $strobe("x=", x);

end


The latest LRM has $debug, which has the same syntax as $strobe, but prints on every iteration of the analog solver; your simulator may or may not support this task yet.

$strobe has been in the Verilog-AMS LRM for quite a while, so yes, it is a problem with your simulator.  Having said this, I now have a vague recollection of a different thread where it was determined that a particular simulator did not have this system task, but did have $write.  (There are subtle differences in the behavior $strobe, $write, $display, $monitor, but I think they're not important for an analog simulation.)

I am not familiar with the `DEBUG_PRINT macro; it is not part of the standard.  Perhaps you can look through the header files and find its definition -- which may use $write (or is it $display?).