How to make options greyed out in a select box variable

[narendrareddy3]

There are five options. 1, 2, 3, 4, and 5 in the select box variable of a catalog item. If I select 3, then it should make the other options non-selectable. Can anyone please help me here with how to achieve it?

[Ankur Bawiskar]

@narendrareddy3 

you can remove the drop down choices but cannot disable the choice values

[maroon_byte]

Might as well convert the select box to check boxes or radio buttons... if check box 3 or radio button 3 is selected, disable the other 4 selections. This way, you can see the other selections but cannot select them.