Dear Experts

In my mian prg I use following codes to handle error routine

ON ERROR DO ERRHAND WITH ;
	ERROR( ), MESSAGE( ), MESSAGE(1), PROGRAM( ), LINENO( )

PROCEDURE ERRHAND
PARAMETER MERROR, Mess, MESS1, MPROG, MLINENO
MESSAGEBOX('Error number: ' + Ltrim(Str(MERROR)) + Chr(13) + ;
	'ERROR MESSAGE: ' + Mess + Chr(13) + ;
	'LINE OF CODE WITH ERROR: ' + MESS1 + Chr(13) + ;
	'LINE NUMBER OF ERROR: ' + Ltrim(Str(MLINENO)) + Chr(13) + ;
	'PROGRAM WITH ERROR: ' + MPROG, ;
	48, _SCREEN.CAPTION)

It works fine, but the problem is when some error window appears with OK button, I press OK button then programm immediately quits and exe is closed.

I want when error window appear, by pressing OK button the program must not be close.

Please help