Code not working

[bo64e]

I have a code that presses space every 5 seconds after I press ctrl + J. I intended to use it for minecraft to make myself jump but when I start it and change the window to minecraft it does not do anything. I have tested it on notepad and the code runs correctly but it doesn't work on the game. Is there something I'm missing?

My code:

Code: Select all

^j::
#Persistent
SetTimer, PressTheKey, 5000
Return

PressTheKey:
Send, {space}
Return

esc::exitapp
Return

[gregster]

There is a whole number of possible reasons - please have a look here:
Why do Hotstrings, Send, and Click have no effect in certain games?
How to Make AHK Work in Most Games - The Basics