Binding keys to chat commands

Hi,

I know how to bind individual keys to a chat command, e.g: bind "l" "say_team w***up guys"

But does anyone know how to you can bind multiple key presses? E.g. hold down SPACE and then press L, or hold down Shift and press Y, or whatever.

I've tried numerous combinations in the console, but can't seem to get it right.

Cheers

Haven't tested this in a while, but I'm fairly sure you can only use CTRL and ALT to do this (presumably, since SHIFT + anything is used to queue actions).

Tried those, but can't seem to find the right command to run