public bool $triggerModal = false;

    public $cols = [];

    public $selectedColumn = null;

    #[On('triggerModal')]
    public function triggerModal(int $importFileId)
    {
        $this->selectedColumn = 3;
        $this->cols = [0,1,2,3,4,5];
        $this->triggerModal = true;
    }

<div>
    <label class="block text-sm font-medium leading-6 text-gray-900">Name</label>
         <select wire:model='selectedColumn'>
               <option value="">(Select Column)</option>
               @foreach ($cols as $col)
                      <option value="{{ $col }}">{{ $col }}</option>
                @endforeach
           </select>
</div>

Name Col: {{ $nameColumn }}

Very basic livewire component,

First the columns array is empty but then I’m just setting the cols and the data which is selected. The data is in the variable I can see. but the select is not bonded. The select is not selected to 3. But the variables have the perfect data.

Added wire:key all over the select foreach etc. and tried also.