Hi Jawad,
It can be done by: right click at the "Tab control", select "Create" ->"Property node" ->"Pages"
Now you have this property at the block diagram.It's output is an array.Wire it to "Index array.vi",
and as index use the page you want to enable/disable. Now, get the output of "Index Array.vi" ,
right click -> "Create" ->"Property for Page Class" -> "Page Visible".
right click -> "Change to write".
Now you can wire to it your desired state.
Regards,
Michael
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LV 8.2 at Windows & Linux