IR REMOTE

Good Day! We are making a project that has remote control. I searched from the internet about how to make an arduino remote control and all of them they just copy the value of the button of an existing remote, but what we want is to assign our own hex value for the button.

I just want to ask if we can make own hex value?

For example 32bit hex number using irsend.sendNec

Thank you for the answer.

---- I'm just an amateur.