I can not instance the child component icon past replace. i face the problem pasting inside to current selection is not possible 

Hi Marjahan, it seems like you are trying to add layers to a component instance. Is that correct?

If so, this is not possible. You have two options:

1. Add the layers inside the main component (help docs)
2. Detach the instance, and add layers (help docs)

If the main component is in a library, you will have to publish the changes, and then accept changes in your working files to see the added layers appear in those files’ instances.