When I'm in Inventor Studio, trying to animate an assembly, I can edit the second but editting the first value is impossible. (the selected one on the screenshot. The part is which has to be animated is ungrounded, flexible and the constraint uses offset as resting position. (which I saw was recommendated in another topic)
The value simply doesn't change if I select it and type another value. Hope someone can help with this.
Can you set the new value in Assembly environment? IMO, then it's tranferred to Studio.
Walter Holzwarth
Tested it right now with 2017. Worked ok with initial change in Assy environment.
If needed, I can place a video (not now, but some hours later)
Walter Holzwarth
Here's a link. (Screencasting is not my favorite playground) 
But I got it later ..
Walter Holzwarth
Thanks for the effort you put into this! I've followed the steps you did and realized you have a mate constrained with an offset, while I have a mate constraint with a min/max offset, so I changed that. That was the only difference.
After that, changing the offset off the constraint does indeed affect the first value in the studio environment, but if I change the second value (in the studio env.) then the first value changes to a random number. Seems pure magic to me.. 
Yes, Studio has some mysteries. I've been stumbling over them on my own.
Perhaps it's getting better, together with annual pricing ..
Walter Holzwarth
Hi The behavior does not sound right to me. The issue is more likely in the assembly constraints, not in Studio. Could you post the files here or send them to me directly ([email protected])?
Many thanks!
Another approach would be to use positional representations and animate between the reps.
-bill
Hmm. I've seen posreps behaving unreliable. If there are more than two for a constraint, uncontrolled jumps can appear.
Walter Holzwarth
Thanks for the help anyway! If I find a solution I will post it here.
