Sequential Keypress Macros

I've been trying to create a macro for my Scimitar and haven't figured out a good way to do this, so any help would be appreciated. Here's the issue, the game I'm playing has 5 slots for health/mana potions (hotkeys: 1,2,3,4,5). I'm short on buttons on the mouse, so I'd like to only devote only two keys to them, one for health potions and the other for mana potions, which activate the next potion in the sequence.

For example:

I tap G10 -- Keystroke: 1

I tap G10 a second time -- Keystroke: 2

I tap G10 a third time -- Keystroke: 3

I tap G10 a fourth time -- Keystroke: 1

I tap G10 a fifth time -- Keystroke: 2

...

Some applications call this a sequential macro, where you press the same button and each time a different keystroke in a series is sent. For those familiar with World of Warcraft, it's basically a /castsequence macro. Short of tediously creating nearly-identical profiles and switching between them, is there any way to do this in iCue?