Product disappear when it is released

I have a robot that picks an object and places it in a H-Frame. In the moment that the object is released in the H-Frame, the object disappears. Is there some idea where the problem comes from? Thank you very much!

It is already solved, sorry

You could write what solved the problem for you, so other users won’t have to ask for it.

I was releasing the object in a WorkProcess object attached to the H-Frame, so I changed this WorkProcess object for a normal Box and now it works (my product gets attached).

In addition, the H-Frame with relative Index was not working for me, I only can use it with absolute Index.