Experimental Physics and
Industrial Control System

hi,

I have two questions to consult you:

1) I want to control a object ( a circle for example) visible or invisible by two PVs. Let me assume PVa and PVb :

if PVa=1 and PVb=1 then the visibility of the circle is invisible otherwise is visible.

I open the circle properties window and have no idea how to process two PV names in Visibility PV blank.

2) how to control a text update widget visible or invisible according to PV. 

however, there is no Visibility PV blank to fill in in Text update properties window.

Any help or any other methods will be appreciated and thanks in advance!

Zhefu