Poupouw Posted October 29, 2015 Share Posted October 29, 2015 Hi guys, I have some problem with my particles mass. I created a Popnet, and inside I am putting a POP property in order to give some mass to my particles. So in the physical tab, I select Mass and then put this expression in it: fit01(rand($ID + 492.58), 0.2, 0.8) And when I launch my sim, I have an error on my node, saying "unable to evaluate expression" Did I do something wrong? Because now my particles are flying instead of falling down. I plug the POP property before the Popsolver. Could you help me? Thank you Quote Link to comment Share on other sites More sharing options...
anim Posted October 29, 2015 Share Posted October 29, 2015 since H13 there is new popnetwork, which is default now and there is some difference from old POPs on POP Property check your mass and Use VEXpression checkboxes and into VEXpression type: mass = fit01(rand(@id + 492.58), 0.2, 0.8); Quote Link to comment Share on other sites More sharing options...
Poupouw Posted October 30, 2015 Author Share Posted October 30, 2015 I thought it was coming from my expression and its validity with the VEXpression. Thank you so much for your help anim Quote Link to comment Share on other sites More sharing options...
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