accumulating attribute in sop solver

[logix1390]

hello 

I am trying to make a custom age attribute in pops using a sop solver.

Basically I have particles sliding down a sphere using a pop collision detect.

I want to add a new age attribute to only the sliding particles.

In the sop solver I use an if statement:

f@myage=0;
if(@sliding>0){
    @myage+=@TimeInc;
}

however, the @myage attribute does not accumulate and only stays at a certain low value.

What am I missing here?

I will attach my scene for anyone that wants to take a look.

Thanks!

custom_age_particles.hipnc

[ThomasPara]

your setting @myage back to zero every frame, just remove that line.