When setting up a filter for my data set the Value source is on manual input and I can not change it for some reason. I want to choose user input element and I've add a dropdown list element on the [age and set it up. Thank you

function toggleFold(index) { let $fold = $w('#fold' + index); let $arrowDown = $w('#arrowDown' + index); let $arrowRight = $w('#arrowRight' + index); // toggle the fold at the index if ($fold.collapsed) { $fold.expand(); $arrowDown.show(); $arrowRight.hide(); } else { $fold.collapse(); $arrowDown.hide(); $arrowRight.show(); } // collapse the other folds [1,2,3,4] .filter(idx => idx !== index) .forEach(idx => { $w('#fold' + idx).collapse(); $w('#arrowDown' + idx).hide(); $w('#arrowRight' + idx).show(); }) } export function headerBox1_onClick(event) { toggleFold(1); } export function headerBox2_onClick(event) { toggleFold(2); } export function headerBox3_onClick(event) { toggleFold(3); } export function headerBox4_onClick(event) { toggleFold(4); }