This worked just fine,
for example I was able to refresh the nextmatch widget with id “nm” on the first found open Pop up which contains “actpm_header” and belongs to the app “actpm” with the following lines:
var popups = window.framework.popups_get(‘actpm’, ‘actpm_header’);
if ( typeof popups[0] !== ‘undefined’ ){
var actpm_et2 = popups[0].etemplate2.getByApplication(‘actpm’);
actpm_et2[0].widgetContainer.getWidgetById(‘nm’).applyFilters();
}
Thanks again!