wix Coding to change the value in a repeater

UPDATE: Coding to change the value in a repeater

I´m struggling a bit with my code: 

I do have a repeater (#repeater1) including some text-elements and one check-mark on each item. 

my goal: 

CHANGE and SAVE updated values (check-mark; Boolean-field) in a repeater. not all of them. only the selected ones.

Now I do have some strange problem with my code (see below) 

when selecting an item (by CLICK) and the value "was" TRUE before, so i changed it to false I get the correct result (=false) in my database/collection. 

but if the value was false and I WANT to set it and update it to "true" MY CODE re-sets the value to false after one second. 

thankful for your advice's 

MY CODE:

export async function repeater1_itemReady() {
    $w("#repeater1").forEachItem( ($item, itemData, index) => {
        $item("#checkbox1").onClick( (event) => {

        console.log("ITEM NAME " + itemData.name + "/// value of boolean: " + itemData.signedInSignedOut);
 // MISSING PIECE !!!
 
 let $item2 = $w.at(event.context);
 let newValue = $item2('#checkbox1').value;
        $item2('#dataset2').setFieldValue('signedInSignedOut', newValue);
        $item2('#dataset2').save();
 
 //$w("#dataset2").refresh();
        });
    });
}

Oscar perez

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