Hi,

1) i have a popaxisforce node


float speed = orbitspeed * fit(random(@id*4684687), 0, 1, 0.5, 4);
orbitspeed = speed;
suctionspeed = speed / 2.0;
@test = chramp(“../popaxisforce1/frequency”, 3, 0);


I want to read in the value of a parameter within vex (which works for wrangle sop) but here i am getting an error.

Any suggestion?

I think the problem is not reading the ramp but writing to @temp
many POP DOPs don't have enabled exporting of custom attributes so they simply error out if you do that
you can use POP Wrangle DOP to do that, or modify the POP DOP

in your case would be adding temp or * to popaxisforce1/geometryvop1/if_use_localspeed/snippet1/Bindings To Export parameter

I don't recommend unlocking the assets, maybe an RFE can be made to allow specifying this directly on POP DOP nodes as it's handy to export attributes from them

according to
H13 Particles Masterclass
http://www.sidefx.com/index.php?option=com_content&task=view&id=2631&Itemid=132 [sidefx.com]
you can just do

export float @temp = 0;
@temp = chramp(…etc