exporting parameters in VOPs

[fixxorion]

Hi everyone!

I'm trying to create a simple POP that does little more than export an attribute...like the Attribute POP. When creating the parameter in VOPs, I check the export button. When I'm in POPs and middle click over the POP I created I can see my attribute. However, when I try to use it in another POP...it always gives an error. What gives?!?

Hope someone knows what's goin on here...

Thanks,

fixxorion

[puma.snyder]

I'm not sure, but try using addattrib vop instead of a parameter vop

[old school]

You have to use an attribute POP after your custom vex POP to create an attribute mapping. Only then can you use the $my_var directly in subsequent POPs.

Just insert an attribute POP. For the name of the attribute use the name of your attribute. Then in the value parameter, use the $MY_ATTR in upper case. If it is a 3 element variable, then you need to append a 0 1 or 2 after the $MY_ATTR like $MY_ATTR0 to put in the first component. If it is a vector, then X Y Z instead of 0 1 or 2.

If you don't want to use the attribute POP, then you have to use the poppoint() function which is slower to access the info.

-jeff

[fixxorion]

Thanks for all the help on this!

puma.snyder: I tried the AddAttrib VOP, but that didn't seem to do it.

old school: It's rather dissapointing that you have to add another POP like that. Although it makes sense, it seems a bit limiting. I guess the only way is to create an OTL with the attribute POP inside, so that everything is self-contained.

Well, that really solves my problem...thanks so much!

fixxorion