The best way is to create huds, then add the name on them and let run a script with a etimerstart and etimergreater
:state=0:hudreset,hudx=50,hudy=90,hudimage=gamecore\huds\TestTubes\1.png,hudname=1,hudhide=1,hudmake=display
:state=0:hudreset,hudx=50,hudy=90,hudimage=gamecore\huds\TestTubes\2.png,hudname=2,hudhide=1,hudmake=display
:state=0,plrwithinzone=1:hudshow=1,etimerstart,state=1
:state=1,etimergreater=3000:hudunshow=1,hudshow=2,etimerstart,state=2
:state=2,etimergreater=3000:hudunshow=2,hudshow=3,etimerstart,state=3
and so on.
If you need a example, look at my game Alternate Corno!
Corno_1