Yes you can. By default the system will allocate 100% of the asset to the goal. If the future value of the asset is greater than the future value of your goal, then that asset is partially allocated to the goal such that the goal amount is fully taken care of.
Important to note that you can modify the allocation by clicking on the black Edit button under the "What's behind all this" section. Once clicked the window will look like this:
*screenshot*