Hey, I need to access a sweep node's width parameter with point att (f@width) to change width based on this attribute . it works on some parameter, for example : mountain sop's height parameter can be access properly (with f@height ).

I don't understand what's the difference, is there some kind of restriction?

Please help me, Thank you so much!

scale

what scale? it's not scale, it's width parameter!
Maybe i need to enable something.
I am always wandering why some parameters can be accessed and modified and others not