Expected behavior

when I have do some select in a multiSelect, I save the value to the db, then I close the tab. Next time I open the multiselect, I want some options in the select remain checked.

Actual behavior

Resources (screenshots, code snippets etc.)

I tried like this (worked in a normal select):

$("#someMultiSelect")
.find("option:contains('" + savedValue + "')")
.attr("selected", "selected");

It doesn't work.