[Script] Movement Script Not Working

So I created a movement/battle script where the trainer and an NPC both move. The player movements work just fine but the NPC stands in place and then doesn't disappear when the battle is over. I've created similar scripts in the past and I'm very stumped. I'm hoping someone may be able to help me. I can post or PM the script if necessary. Thank you.

@Pokeeng

You should probably post your script and the settings for the NPC sprite and the script in AdvanceMap.

So the person ID of the NPC is 0x1334 if I'm not mistaken. I set movement and trainer as '01'

#dynamic 0x807AFD

#org @start
lock
checkflag 0x1330
if 0x1 goto @already
msgbox @1 0x6
waitmsg
applymovement 0xFF @walk
waitmovement 0xFF
msgbox @2 0x6
applymovement 0x11 @walk1
waitmovement 0x11
applymovement 0xFF @walk2
waitmovement 0xFF
trainerbattle 0x3 0x16 0x0 @after
msgbox @3 0x6
fadescreen 0x1
setflag 0x1332
hidesprite 0x11
setflag 0x1334
fadescreen 0x0
setvar 0x4057 0x4
setflag 0x1336
release
end

#org @already
msgbox @again
trainerbattle 0x3 0x16 0x0 @after
msgbox @3 0x6
fadescreen 0x1
setflag 0x1332
hidesprite 0x11
setflag 0x1334
fadescreen 0x0
setvar 0x4057 0x4
setflag 0x1336
release
end

#org @1
= Did you really think you had won

#org @2
= I was moments away from infinitenpower.pWith Jirachi, I would have rulednthe world unopposed.pYour interference will not gonunpunished.pI will have my vengeance!

#org @after
= No.pNO.pNO!pI CANNOT LOSE!

#org @3
= Mark my words, child.pThis world will feel my wrath.pThis is not the last you will seenof me.

#org @walk
#raw 0x62
#raw 0xFE

#org @walk1
#raw 0x8
#raw 0x8
#raw 0x8
#raw 0x8
#raw 0x52
#raw 0xFE

#org @walk2
#raw 0x47
#raw 0xFE

Have you expanded the amount of flags? 0x1334 is not an available flag in the vanilla games as far as I'm aware. Where did you get the idea to use those values?

For Fire Red, check this list for where flags are used: https://github.com/pret/pokefirered/blob/master/include/constants/flags.h

For Emerald, check this list: https://github.com/pret/pokeemerald/blob/master/include/constants/flags.h

I've used other flags from after 1300 before. I just assumed it was fine. How bad is it?

@Pokeeng

If you did not expand the amount of flags it can lead to completely random results, as is also stated in this thread: https://www.pokecommunity.com/showthread.php?t=302347. Long story short: no, it's not safe to use them, so you shouldn't. Instead, stay with the flags mentioned in the sources I sent before.

So I've always been led to believe by the sources I've used that 1200+ is safe but assuming that the issue is the script, is there anything noticeably wrong with it?

@Pokeeng

That's why I was curious what sources you used. Because anything I've ever read about flags is to be cautious which ones to use.

Either way, you use hidesprite 0x11. So that means person event number 17 (in decimal) will be hidden. Make sure those correspondent correctly with AdvanceMap. Subsequently, make sure to use a safe flag instead of those you've used up to this point.

I'll definitely make sure to use safe flags from here on out. This specific script is actually for the end of the game so I'm surprised I haven't encountered a single glitch in 10+ playtests. I appreciate the help, thank you so much!