;JG - Jump if greater - SF,OF,ZF(Sign FLAG)

section .data
    value1  db  30
    vlaue2  db  20
    
section .text
    global _start        
    
    
start:
    mov al, byte    [value1]
    mov bl, byte    [value2]
    cmp al, bl
    jg  greater
    
    
not_greater:

    ; your code hre for not greater case
    jmp done
    
greater:
    ; your code hre for greater case

done:
    ;Exit code here
    mov rax,    60
    xor rdi, rdi
    syscal