There are two Crawlers, one for the Hall and the other for the Platforms. Make sure you changed the exp for both (you can also activate the option "Display -> Edit Similar Enemies"... I shouldn't have put that option in that submenu ^^").

If that was not the problem, I guess you're not replacing the modded files properly.

Also, you may want to add more crawlers per battle because even if you give the max possible exp with crawlers, it's still slow to reach the lvl 99. But adding more enemies is slightly more tricky: you need to do 2 things.
1) Select a group, increase the enemy amount to 4 and verify each enemy in the list below is the crawler, is targetable and not linked.
2) Click on the "Edit Script" button. You only need to change the "Main_Init" function. As you see, there are several lines written "InitObject" depending on the group appearing. Add more of them so there are 4 "InitObject" in the case corresponding to the group, and increase the 2nd number by one each time. For instance, if you put 4 crawlers in both groups, your function should look like this:
Then click on "Parse" and "Ok".

Originally posted by Tirlititi:

There are two Crawlers, one for the Hall and the other for the Platforms. Make sure you changed the exp for both (you can also activate the option "Display -> Edit Similar Enemies"... I shouldn't have put that option in that submenu ^^").

I picked up on that right away, since they're right next to eachother on the list. I wasn't aware of the Edit Similar Enemies option, so I've been editing them both manually. I gave Edit Similar Enemies a try, and it certainly does what it says, but the change still didn't take effect in the game.

Originally posted by Tirlititi:

If that was not the problem, I guess you're not replacing the modded files properly.

I assume this is my problem. After I finish my edits, I go to File > Save Steam Mod, take the FF9_Data folder inside the x64 folder it creates, and overwrite the existing FF9_Data folder in the game's directory. I'm still somewhat of a novice with your program, and assume I'm doing something incorrectly. Maybe you can spot the mistake.

Thanks for responding, by the way!

EDIT: I think I may have found a workaround, but I would still like to know how to properly edit a monster's EXP value for any future mods I might make!

I'm gonna go into Party > Stats > Level Progression and completely tank the Required EXP curve. Hopefully that will speed things along! Haha

EDIT EDIT: Changing the EXP requirements for each level to 1 worked wonders!