[Eslam Amin]

i was searching about some thing like that
so i manage it with my expression below

just put every expression in the check box 1 2 3

s , s1 , s3
link them to your controller

// this is for the first one
var s = effect("Checkbox Control")("Checkbox") ;
var s1 = effect("Checkbox Control 2")("Checkbox") ;
var s2 = effect("Checkbox Control 3")("Checkbox") ;

if ( s1 == 1 || s2 == 1 ){
s = 0 ;
}else
{
s = effect("Checkbox Control")("Checkbox") ;
}

// the second
var s = effect("Checkbox Control")("Checkbox") ;
var s1 = effect("Checkbox Control 2")("Checkbox") ;
var s2 = effect("Checkbox Control 3")("Checkbox") ;

if ( s == 1 || s2 == 1 ){
s1 = 0 ;
}else
{
s1 =effect("Checkbox Control 2")("Checkbox") ;
}
s1

// the third
var s = effect("Checkbox Control")("Checkbox") ;
var s1 = effect("Checkbox Control 2")("Checkbox") ;
var s2 = effect("Checkbox Control 3")("Checkbox") ;

if ( s == 1 || s1 == 1 ){
s2 = 0 ;
}else
{
s2 = effect("Checkbox Control 3")("Checkbox") ;
}
s2