Seeing as there are 4 particles in the simulation but only 3 are visible, I assume one is below one of the other three. I assume this shy particle is a CONV below the other, visible CONV. You seem to be trying to drive an ARAY, so I'll just assume that the SPRK'd particle between the CONV stack and the ARAY is a METL. I also assume that in this CONV stack there is a CONV(METL) and a CONV(SPRK) above it.
If all of the above assumptions are correct, the problem is that the CONV stack resets the SPRK(METL) before the ARAY has a chance of being activated by the SPRK(METL). Just move the CONV stack one pixel down.
The answer of course also assumes that you're aware of the nature of particle evaluation order and that your particles are ordered properly.
Let me tell you, basing answers on such a ridiculous amount of assumptions is not fun.
tox2:
not work!
Can I just point out that this is a bit like ringing 999/911 and having this chat:
"Help! There's an emergency!"
"Okay, stay calm. Where is this emergency?"
"Britain/America."
*hangs up*
It isn't very helpful.