How to supress mask dialog callbacks when block is opened?

I had designed a masked subsystem that has dialog callbacks as well as initialization code. Each dialog parameter has a dialog callback which enables or disables some dialog parameters in the masked subsystem(based on some checkbox selection).

As per the mathworks documentation " You open the mask dialog box. Callback commands execute sequentially, starting with the top mask dialog box "

This is causing a problem. As the dialog callbacks execute sequentially when block is opened, the dialog parameters(enabling and disabling) are resetting as per the last dialog callbak code. I Just want to supress dialog callback execution only when block is opened .

Pl comment.