Removing INIT.A51 file

I am facing an issue with initialization. I created a project with uVision3. I modified standard start up file STARTUP.A51 for my application as below:

?C_C51STARTUP   SEGMENT   CODE
?STACK          SEGMENT   IDATA

                RSEG    ?STACK
                DS      1

                EXTRN CODE (my_main)
                ;EXTRN CODE (?C_START)  ;--- commented ?C_START


                ;.........Standard Code.......

IF PBPSTACK <> 0
EXTRN DATA (?C_PBP)
                MOV     ?C_PBP,#LOW PBPSTACKTOP
ENDIF

                MOV     SP,#?STACK-1

                ;LJMP   ?C_START  ;--- commented jump to ?C_START
                LJMP my_main

NOTE: my_main is a starting function defined in my project.

I am including this modified file in my project. Also i am not including INIT.A51. With this i am facing an issue in my code. Whenever i initialized global data, program wont take it. For example, if i initialized below global variable:

unsigned char counter = 5;

When in code i checked counter value, it is always 0x00. I think this is problem with not calling ?C_START which is defined in INIT.A51. Due to this, all global initialisation is not happening.

Is this correct ? Is there any way to avoid this issue (apart from including INIT.A51)? Can anyone tell me which part of the INIT.A51 file i can copy to STARTUP.A51 before below code

                ;LJMP   ?C_START  ;--- commented jump to ?C_START
                LJMP my_main

so that i cant have this issue ?

Thanks in advance !!