use print, write or display in trigger

Hello,

I wrote a trigger that made one thing : PRINT (“TRIGGER OK”)
In trigger screen, i enabled all options in Active State and apply trigger on all fields on file
At end, i wrote a samll pgm that made an update of this file

In AOS, the number of trigger passage increments for one in screen subsytem activity
But, in Started task, i see only this


Page      1                                                  16-08-04  09:53:40 
09:53:40           ***** ERRORS DURING INITIALIZATION *****            16-08-04 
                             - List Errors -                                    
NAT3022 Invalid command IS. DB/FNR 00000/00000. Subcode 00000.                  
NAT3403 ADAMODE was changed from 2 to 0.                                        
***** ADABAS Triggers and Stored Procedures *****                               
      - NATURAL Subsystem Initialization -                                      
Program + Library Location ... STPPDRIV SYSSPT                                  
Task Initialization Time ..... 2016-08-04 09:54:33                              
Task Identification Info ..... 01 ( SVC 214 )                                   
Task Trigger DBnr and Fnr .... (12,8)                                           
Task User Identification ..... ADAB12T  NUC012                                  
Trace Indicator .............. A                                                
*-----------------------------------------------*        
***** ADABAS Triggers and Stored Procedures *****        
      - NATURAL Subsystem Initialization -               
Program + Library Location ... STPUTRAK SYSSPT           
Task Initialization Time ..... 2016-08-04 09:54:33       
Task Identification Number ... 01                        
Task User Identification ..... ADAB12T  NUC012           

but nothing about my trace

an idea ?
Brgds

Trigger code is looking fine. Is you responding OK?