'include doesn't work, assembly tasm 8086 IDEAL mode

I am trying to use the include command in my code, but when I run the code (from vs code), it crushes and the error is: Error class.ASM(1131) Undefined symbol: DELAY and more just like it for all the other methods (proc) in the other files, I never used include before and I have no idea why doesn't it work. help please.

the error:

[assembler's message] 5 Error,0  Warning collected
    Turbo Assembler  Version 4.1  Copyright (c) 1988, 1996 Borland International
    Assembling file:   JetFight.ASM
    **Error** JetFight.ASM(1108) Undefined symbol: MOVE_PLANE_DOWN
    **Error** JetFight.ASM(1112) Undefined symbol: MOVE_PLANE_RIGHT
    **Error** JetFight.ASM(1115) Undefined symbol: MOVE_PLANE_UP
    **Error** JetFight.ASM(1118) Undefined symbol: MOVE_PLANE_LEFT
    **Error** JetFight.ASM(1131) Undefined symbol: DELAY
    Error messages:    5
    Warning messages:  None
    Passes:            1
    Remaining memory:  457k

start of the file:

IDEAL

MODEL small

STACK 150h

JUMPS

DATASEG 

the include:

CODESEG 

include "JetCode.asm"

tysm for any help!



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