Dropdown element, with options from collection, value is reset during refresh and/or leaving page

Hi, I am very new with WeWeb so this might be a silly question…

I’m trying to make simple calculator with several pages to feed the data. Like materials using dropdown element and their amounts using input element.

For material selection I have dropdown element with options coming from airtable via collection “CO2e_Rakenteet”. Selection works fine and element value changes correctly.

When I leave from page and come back, the selected option has been resetted. The value should remain until it is cleared or changed. I’ve tried to use variable to store the value but haven’t been able to make it right. Probably because WeWeb is so new to me… I would appreciate some examples or/and advice how to solve this.