# Assigning individual particles to fields (runtime)

**URL:** https://forum.highend3d.com/t/assigning-individual-particles-to-fields-runtime/5480
**Category:** Maya
**Tags:** mel
**Created:** [March 4, 2003, 12:44pm UTC](https://forum.highend3d.com/t/assigning-individual-particles-to-fields-runtime/5480 "2003-03-04T12:44:52Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![user\_deleted](https://forum.highend3d.com/letter_avatar_proxy/v4/letter/u/35a633/32.png) [@user\_deleted](https://forum.highend3d.com/u/user_deleted)
#### Post date: [March 4, 2003, 12:44pm UTC](https://forum.highend3d.com/t/assigning-individual-particles-to-fields-runtime/5480/1 "2003-03-04T12:44:52Z")

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I have a particle object... assume all particles are within the field area. I need to flag individual particles so that they become affected by the field after a certain point.

(Imagine bubbles forming on the inside of a glass of coke, eventually they are released, and rise to the surface...)

I'm using opacityPP as a flag for now (cos Im rendering blobbies so its spare) I use this set to 0 at creation time, then after a certain point I set it to 1.0

There will be no dynamics on each particle until the flag is set, if thats any help - but I am changing each particles radiusPP and positionPP individually up to that point.

The best solution would be linking the particle to a given field, but linking the particle to dynamics would also do.

Anyone got any suggestions?

Cheeeeeers!