Command adds double the value and vanilla commands throw errors

Hi everyone,

I'm working on a mod using MCreator, and I’ve created a command called /manamax that should allow me to either add or set the value of a player variable called manaMax.

It takes two parameters:

• A string: action (either add or set)

• A number: amount

   

I also created a procedure that's called when the command is executed. Inside the procedure, I check the value of the action parameter, and then either add to or set the value of manaMax.

However, I'm having two issues:

1. add adds double the amount

When I run /manamax add 5, it increases manaMax by 10 instead of 5.

➡️ I double-checked my procedure and I’m only using Set manaMax to manaMax + number once.
➡️ I also confirmed that the procedure is only called once from the command.

2. Other vanilla commands like /gamemode and /tp are throwing errors

After I added this custom command, the normal Minecraft commands started showing errors in the chat or stopped working entirely.

➡️ I suspect it’s something wrong with how I'm handling the parameters in my procedure.

Extra notes:

• My command is set to normal type, with permission level 2.
• In the procedure, I use:
  • Get command string parameter "action"
  • Get command number parameter "amount"

Any idea why:

1. add is doubling the result?
2. My command could be breaking vanilla commands?

Thanks in advance!