[Global Enemy No.1]

I'm trying to make some scripts, but theres a concept I need help with.

Ie.
How can I bind "p" so I can click and hold "p" to scroll trough weapons?


This is what I've tried:
alias burst_command "invprev; invnext; lastinv; burst_loop"
alias burst_triggeron "alias burst_loop burst_command"
alias burst_triggeroff "alias burst_loop"
alias +burst "burst_triggeron;burst_loop"
alias -burst "burst_triggeroff;-attack"

alias "firemode_burst" "bind p +burst"

firemode_burst

This is just an edited script, but should have worked with the nvprev; invnext; lastinv input, but it crashes the whole game.
Is it because there are no "wait" in CSGO?