Personas 2.0 does not support dynamic show/hide controls. Here is a "tricky" way you may do:
1. Create an empty label control which has a size enough to cover the controls you want to hide.
2. Place the label at the left of the hidding controls.
3. Set label property: width to NaN, and background color the same as the overall background color.
4. For Hidding: set the label value to an empty string long enough.
For Showing: set the label value to one empty char.
That's it! :-)