Hello,

I was trying to change the maximumSelectionLength option dynamically in multiple select2 v4.0.0 & v4.0.4 but nothing was changed.

In my code, if the user chooses 'ALL' value I need to set maximumSelectionLength to 1, in order not to allow user to choose other option than 'ALL', but if the user chooses some other value, I need to keep maximumSelectionLength = 0 (Infinity).

I tried this code:

// select2 initilaization
$('#selector').select2({some options and ajax call})
}).change(function(e) {
    $(this).data('select2').options.options.maximumSelectionLength = 1;
    console.log($(this).data('select2').options.options);
});

In console.log I can see the options is changed, but it is not applied to the select2 options.

Knowing that in select2 v3.5.0 I used to this and it was working fine.
I used to write this code:

$(this).data('select2').opts.maximumSelectionSize = 1;

Please look into this issue.
Thank you.