Hide, show dialog query select button.

[Pandasama]

though if you want to hide/show this element in runtime - i think, not showQueryValues(), not showQuerySelectButton() cant help you - i'm almost sure than this methods processed just once, when dialog opened

i think, you must get object for button control (may be by modify RunBase method where this button is created, or maybe RunBase already have variable for this button) and change this object visible property