fix this javascript formula

Job ID: 31669534

Budget: £10 – £11 GBP

hi

var prod_id = 1234;
var itemsboxli = 1234,1234,1234

var itemsupdboxli = itemsboxli.split(',').filter(x => x !== prod_id).join(',');

currenty
itemsupdboxli will show 0

it should show
1234,1234


get var itemsboxli and remove var prod_id once and save as var itemsupdboxli
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